Test 1-40
Bottoming drill
A flat-ended twist drill designed to convert a cone at the bottom of a drilled hole into a cylinder is called
Only the teeth hardened
A flexible back hacksaw blade is one that has
Buckle or run out of line when too much pressure is supplied
A flexible hacksaw blade has a tendency to
Apitting
A form of correction that develop on a highly localized area on a metal surface
Induction furnace
A furnace used in melting ferrous metals.
Crucible furnace
A furnace used in melting non-ferrous metals is called:
Electric arc welding
A fusion process in which the metal is heated together into a solid joint.
Arc welding
A fusion welding process in which the welding heat is obtained from an electric arc set up either between the base metal and one electrode or between to electrodes.
Internal gear
A gear with teeth on the inner cylindrical surface.
External gear
A gear with teeth on the outer cylindrical surface.
Aero fall mill
A grinding mill of large diameter with either lumps of ore, pebbles, or steel balls as crushing bodies the dry lead is swept to remove mesh material.
Cold rolled steel, Hot rolled steel and Structural steel
A hacksaw blade with 14 TPI is best suited for cutting
Small tubing, Conduit and Sheet metal under 18 gage
A hacksaw blade with 32 TPI is best suited for cutting
Music wire
A hard drawn also 80% reduction but it is made of high-grade steel
Soft materials
A hard grade grinding wheel is suitable for grinding
Tapping hole
A hole, which is drilled for a particular size of a tap, is called
Feather key
A key that allows the hub to move along the shaft but prevents the rotation of the shaft.
Roll Pin
A key with one of several patented methods of keying is driven or pressed into a hole that is small enough to close the slit, assembled in radial direction.
Stud bolt
A kind of bolt, which has no head but instead has threads on bolts ends.
Independent chuck
A kind of chuck, which has reversible jaws, which could be adjusted separately.
Universal Chuck
A kind of chuck, which should not be used where accuracy is required called:
Worm Gear
A kind of gear used for duty works where a large ratio of speed is required and are extensively used in speed reducer is known as:
Shearing stress
A kind of stress that is caused by forces acting along or parallel to the area is called
4 links and 4 turning pairs
A kinematics chain needs a minimum of
Spindle Gear
A lathe machine threading mechanism is called:
Lock washer
A locking device used to maintain pressure between the threads of the bolt and nut.
Key
A machine element inserted parallel to the axis of a shaft
Shaper
A machine tool used principally to machine flat or plane surfaces with a single pointed tool
Power Saw
A machine tool used to out metal parts a lift, medium and large section using a reciprocating hacksaw blade.
Milling Machine
A machine tool used to produce a variety of surfaces by using a circular type cutter with multiple teeth called:
Slotter
A machine tool, which is very similar to a shaper except that the ram reciprocates vertically rather than horizontally.
Arbor press
A machine used for forcing an arbor or a mandrel into drilled or bored parts preparatory to turning or grinding
Grinding Machine
A machine used in shaping metal by means of abrasive wheel of the removal of metals with an abrasive is called:
Bladder press
A machine, which simultaneously molds and cures a pneumatic tire is called
Shaping
A machining operation whereby the tool reciprocates while the feed is stationary.
Nickel, cabalt and steel
A magnet is able to attract
Iron
A major component of cast steel is:
Flywheel
A massive wheel, which by its inertia assists in securing uniform motion of machinery by resisting sudden changes of speed.
Silver
A material best suited for manufacturing of fuse wire
Dividing head
A mechanism, which usually do the indexing in a machine tool is called:
Mercury
A metallic element and only metal that is liquid at ordinary temperature.
Bronze
A metallic element of copper-tin alloy
Projection welding
A method of resistance welding in which the heating and the pressure are localized at specified points by providing embossed or coined projections on the pieces to be joined.
Thermit welding
A mixture of aluminum powder and a metal oxide powder is ignited by a special powder in a crucible.
The space is not sufficient to play the new blade in the old cut
A new hacksaw blade should not be used to old cut because
Manganese steel
A non-magnetic steel is:
Atomizer mill
A solids grinder and the product is a fine powder
Body centered cubic space lattice
A space lattice found in alpha-iron is called the
Alloy
A special metal formed when two or more metals are melted together.
It is elastic.
A specimen is subjected to a load. When the load is removed, the strain disappears.From this information, which of the following can be deduced about this material?
Spectrometer
Fast process of analyzing all elements and a chemical components of steel casting is:
mm per revolution
Feed in a lathe is expressed in
Size or length, Shape and Grade and cut
Files are classified according to
Balance wheel
Flywheel is also known as
8%
For a high corrosion resistant stainless steel, what minimum chromium content is required?
Flame plating
A surfacing method of blasting particles of tungsten carbide onto the surface of a piece of metal.
Unilateral
A tolerance where the size of a part is permitted to be either large or smaller than the given dimension.
Bilateral
A tolerance where the size of a part may be larger only or smaller only, than the given dimension
Caliper
A toll used for measuring diameters.
Reduce the axial feed pressure
A twist drill has its point thinned in order to
Shank, material and diameter
A twist drill is specified by:
Type B belts
A type of V-belts to use in a driving pulley with a speed of 260 rpm and transmitting 5 hp
Stud bolt
A type of bolt commonly used in the construction that is threaded in both ends.
Stud bolt
A type of bolt distinguished by a short portion of the shank underneath the head being square or finned or ribbed.
Cast iron
A type of iron, which contains 3 to 3.5 % carbon either in combined form or in free state
Woodruff key
A type of key that is used in self-aligning machine key made by a side milling cutter in the form of a segment of a disk.
7 x 7 IWRC
A type of rope used for haulages, rigging, and guardrails.
Beleville spring
A type of spring made in the form of dished washer
Body centered cubic space lattice
A unit cell contains nine atoms is known as the
An eccentric and a cam
A universal chuck cannot be used to cut
1:20
A usual ration of soluble oil and water used in coolant is
Velocity
A vector quantity that describes both how fast it is moving and the direction in which it is heated.
Muriatic acid
A very effective flux for soldering galvanized iron and zinc.
Tack weld
A weld made to hold the parts of a weldment in proper alignment until the final welds are made of
Association Iron and Steel Institute
AISI means
The lube oil is supplied under pressure
Aerostatic bearing is one in which
Stoned with an oilstone
After grinding a tool bit, the cutting edge should be
Duralumin
Age-hardening is related with:
Artificial aging
Aging at moderately elevated temperature expedites the process and
one link should be fixed
For a kinematics chain to be considered as mechanism,
15°
For a single Hooke's coupling the shaft angle should not be greater than
zero
For a symmetrical cross-section beam the flexural stress is _______ when the vertical shear is maximum.
15
For a universal joint shaft angle should be _________ degrees maximum and much less if in high rotational speed.
1.25 to 1.40
For best running conditions of a gear, the contact ratio should be about:
Electro slag welding
For butt welding of two plates each of which is 25 mm thick, the best process would be
Half round nose
For cutting oil grooves in bearing _____ chisel is used
Bronze rim with cast steel spider
For economical cost in the manufacturing large worm gears, the following materials are usually applied:
None of these
For equalizing the rotation of two gears, a gearbox employs"
Hunting tooth addition
For evenly distributed and uniform wear on each meshing gear tooth, the ideal design practice is to consider a:
2000 and more fpm
For fabric belts, recommended speed is:
Lead float life
For filing lead or babbit, use a
90%
For fusion welding, efficiency shall be taken as equal to
Form relief cutter
For gear cutting which cutter is used
60°
For general work the cutting angle of a cold fist chisel is ground at an angle of
Silicon carbide
For grinding materials having low tensile strength which abrasive is used
Silver
For heavy loads in aircraft bearings the material used with lead to reduce the risk of seizure is
10:1
For helical and herringbone gears, the speed ratio is limited to:
12
For internal gears having a 20 degree pressure angle and full depth teeth, the difference between the number of teeth in a gear and pinion should not be less than ______.
zero
For shafts, the shear due to bending is a maximum at the neutral plane where the normal stress is
Axial pitch
For worm gears, circular pitch is equal to:
20 degrees
For worms mating with gears having 24 teeth or more the _____ pressure angle is recommended.
Spur, Worm and Bevel
Formed milling operation of cutting gears can be used for cutting which type of gears?
Euler's formula
Formula that applies to a very slender column is called
18
Foundation bolts should be at least ____________ times the diameter of the anchor bolt.
Graphite
Foundry crucible is made of
Truss
Framework composed of members joined at their ends to form a rigid structure is known as :
Increased sliding viscosity
Friction between chip and tool may be reduced by
Increasing sliding
Friction between chip and tool may be reduced by
Brass and copper, sheet metal over 18 gages and tubing
Hacksaw blade with 24 TPI is best suited for cutting
High speed, tool speed and tungsten alloy steel
Hacksaw blades are made of
None of the above
Half corner weld is used
Copper and zinc
Hard solder is made of
Calcium
Hard water is water, which contains soluble salts of which of the following elements?
Pitting occurs in oxygen-rich anodic areas and the rust is deposited nearby
All of the following statements about rusting of iron are correct, except:
Plane of rotation
Any perpendicular to a gear axis is called:
Arc of approach
Arc of the circle through which a tooth travels from the point of contact with the mating tooth to the pitch point is called:
Arc of action
Arc of the pitch circle through which a tooth travels from the first point and contact with the mating tooth to the pitch point is called:
Arc of recess
Arc of the pitch circle which a tooth travels from its contact with the mating tooth at the pitch point to the point where the contact ceases is called:
Cutting oils
Are mixture of lard, cotton seed or rape-seed oils and mineral oils.
Spot joint
Are resistance welds, usually round in the same form as the electrodes that press the sheets together
1:4
As general rule contact ratio should not be less than:
60%
As one example, the ASME code for riveted joints permits the design surface compressive stress to be about ________ higher than the design tensile stress.
Flywheel
Attached to the rear end of the crankshaft is the
prestressing thick cylinders
Auto frottage is the method of
60 to 100
Average mine-hoist practice is to use drums ______________ times the rope diameter.
Tin, copper, antimony and lead
Babbit metal is an alloy of
0°
Back rake angle for HSS single point cutting tool to machine free cutting brass is
0°
Back rake angle for a high speed steel point cutting tool to machine free cutting brass is
Equalize the weight in very portion of the wheel
Balancing of grinding wheel is done to:
25%
Balata belt is about _____ stronger than rubber
Cleaned
Before applying layout blue on a piece of metal, it must be
Cleaned
Before applying layout for blue on a piece of metal, it must be
Center punched
Before drilling a hole in a pipe of metal it should be
Loose load, Heavy Belt and Driving pulley too small
Belt slip may take place because of:
Pitch cone
Bevel gear teeth are built with respect to a ____ rather than to a pitch cylinder as ion spur gears.
None of these
Bevel gears are used to transmit rotary motion between two shafts whose axes are:
Bronze, Brass and Duralumin
Bevel gears subjected to corrosion and lightly loaded are usually made of:
Neutral flame
Brasses and bronzes are welded using
Two non-ferrous metal
Brazing is used for joining
Hard solder and More heat
Brazing requires
Semi-skilled operators can be employed
Broaching operation is generally used in automobile industry as:
400
Buckingham says that mating phenolic gears with steel of BHN less than ____ leads to excessive abrasive wear
1 degree
Criteria for the limiting torsional deflection vary from 0.08 per foot of length for machinery shafts to _______ per foot.
Absorb shocks because of road unevenness
Cross wire grooves are types which
Cast iron
Cupola furnace is used to produce _______.
Adding carbon and nitrogen by heat treatment of steel to increase its surface hardness
Cyaniding is the process of
has a reaction equal to the load
A cantilever beam having a uniformly increasing load toward the fixed end
0.35 to 0.40% C
A carbon content in the range of ______ in steel readily responds to heat treatment.
Stove bolt
A cheap variety of bolt was made in small sizes.
Dedendum Circle
A circle bounding the bottom of the teeth
Root circle
A circle coinciding with a tangent to the bottom of the tooth space
Root Circle
A circle coinciding with a tangent to the bottom of the tooth spaces
Multiple disc clutch
A clutch that has a disadvantage of heavier rotary masses.
High carbon steel
A cold chisel is made of
Ore
A combination of minerals which can be profitably mined
The greater the load capacity of the bearing
A conclusion repeatedly verified by experiments is _____ that the smoother the surface.
back cone
A cone formed by elements, which are perpendicular to the elements of the pitch cone at the large end.
Absorb heat of friction, Prevent the blade from overheating and Prevent the blade from losing
A coolant is usually used when cutting material in a power hacksaw to
Galvanic
A corrosion occurs within or adjacent to a crevice formed by contact with another piece of the same or another metal is called:
8
A crossed belt wider than ______ inches should be avoided
Side rake
A cutting tool angle between the side cutting edge and the plane perpendicular to direction of feed travel is _______ angel.
Broaching Machine
A cutting tool used to finish internal and external surfaces by the use of a cutter called broach, which has a series of cutting edges of teeth
Gear shift
A device for engaging and disengaging gears.
Micrometer
A device used for accurately measuring diameters.
2 flutes
A drill bit has
Headstock
It is a large casting located on the left end of the bed.
Drift punch
It is a long, tapered punch used for loosening straight pins, rivets and other small parts being disassembled.
Broaching machine
It is a machine tool designed to machine internal work such as cylinders, holes in castings, and dies, types are horizontal, vertical jig, and single.
Shaper
It is a machine tool used for cutting flat-on-flat an-toured surfaces by reciprocating a single-point tool across the work piece.
Abreast milling
It is a milling method in which parts placed in a row parallel to the axis of the cutting tool end are milled simultaneously.
Jumping
It is a process by which the length of a work piece is reduced
Drawing out
It is a process by which the length of a work place is increased by reducing its cross section area.
Annealing
Heating of metal above the critical temperature and then cooling slowly usually in the furnace to reduce the hardness and improve the machinability is called:
Normalizing
Heating to some 100F above the transformation range with subsequent cooling to below that range in still air at room temperature to produce uniform structure of metal is termed as
Addendum
Height of tooth above pitch circle or radial distance between pitch circles and top land of the tooth is called:
Addendum
Height of tooth above pitch circle or the distance between the pitch circle and the top of the tooth is called:
Crossed helical gear
Helical gears mounted on non-parallel shafts are called _____
30 and 45
Helix angles of _____ degrees are preferred for double helical gears.
15 and 23
Helix angles of _____ degrees are preferred for single helical gears.
Have a line contact between the teeth
Herringbone gears are gears which:
0.8 to 2 %
High carbon steel has a carbon content of:
Cold pressing
How are rivets made?
By using a wooden plate form, By using a wooden packing piece under the vice base and By using a vice adjusting fixture
How is the height of a bench vice adjusted?
1.25 Ds to 2 Ds
Hub length usually vary from:
Costly
Hydraulic clutches are used in _______ vehicles.
Fluid brake
Hydrodynamic brake is the major type of:
Bevel Gear
Hyphoid gear is a special type of gear like:
Upsetting
In Machine Shop had forging operation of lengthening a piece of stock while reducing the cross-sectional area of work is called:
Shaper
In _______ the tool is released in return stroke.
Four
In ________ jaw chuck each jaw can be adjusted independently.
Residual stress
In a part at uniform temperature and not acted upon by an external load, any internal stress that exists is called:
Material of job, material of tool and feed rate
In a planer the cutting speed depends upon
98% or more
In designing gears of power transmission, consider and efficiency of _____ as recommended.
key
In flange coupling the weakest element should be the
English Module
In gear design, the ratio of pitch diameter, in inches to the number of teeth is called:
0.002 in/ft
In general for machinery shafts, the permissible deflection may be closer to
design stress = ultimate stress divided by factor of safety
In general, the design stress and factor of safety are related as follows
Sulfur
In greater quantity, this element is harmful to the molten ferrous metal.
rigidity
In many cases the _________ of the shaft is an import design feature.
30
In many flywheel designs, about how many percent of the weight is concentrated in the hub and arms
Single plate clutch
In motor vehicles, it is very common practice to use a:
Hand brake
In motor vehicles, there is a __________ in addition of foot brake.
Dilute potassium hydroxide
In nickel - iron cell, the electrolyte is:
Do not need external supply of lubricant
In oiless bearing
Twice
In order to get benefit helical-gear action the face width should be at least _____ the axial pitch.
Tooth outlines are usually involute curves
In usual spur gearing, the:
Honing
In which method a bore is finished to a very close tolerance
Square
In which screw thread the side = width of flat = width of space = 0.5p is termed as
Drifting
It is a process of enlarging and smoothing the punched hole by means of tapered drifts of various sizes and shapes.
a point obtained by intersection of extending adjoining links
Instantaneous center of rotation of a link in a four bar mechanism lies on
Idler
Intermediate gear is also called ____ gear in a gear train engagement.
Universal cylindrical grinding machine
Internal and external taper on cylindrical jobs are ground in
Roughness
Is the relatively finely spaced irregularities on the surface
Roughness
It consists of surface irregularities, which result from the various manufacturing process.
Guide bearing
It exits primarily to guide the motion of a machine member without specific regard to the direction of load application.
Compound rest
It gives the cutting tool longitudinal feed, cross feed or angular feed
Silicon
It has a powerful softening effect on cast iron and its pressure in cast iron reduces the ability of the iron to retain carbon in chemical combination
Carburizing
It is a case hardening process by which the carbon content of the steel near the surface of a part is increased
Nitriding
It is a case hardening process in which work piece is heated in a stream of ammonia at 500 to 550°C.
Under cut
It is a condition in generated gear teeth when any part of the fillet curve lies inside of a line drawn to the working profile as the lowest point.
Drilling machine
It is a device, usually motor-driven, fitted with an end cutting tool that is rotated with sufficient power either to create a hole to enlarge an existing hole in a solid material.
15 to 20
It is advised that in rubber belts application mounting, it should have an initial tesion of _______
Rolling bearing
It is also called anti-friction bearing.
Down milling
It is also known as climb milling in which the rotation of the cutter and the movement of the table is the same direction.
Down milling
It is also known as climb milling in which the rotation of the cutter and the movement to the table is in the same direction
Plain milling
It is also known as slab peripheral milling
Tip relief
It is an arbitrary modification by moving a small portion of a tooth material at the tip of the gear tooth.
Machine shaft
It is an integral part of a machine.
Tempering
It is done to decrease the brittleness and to increase the toughness
27
It is ideal for maximum quietness in sprocket drive operation to choose _____ or more teeth.
Fitted bearing
It is one in which the radii of the journal and the bearing are the same
rigid body
It is one that is not appreciably deformed by the action of any external force or load.
Lay
It is the direction of the predominant surface pattern
Pitch
It is the distance measured to the axis from a point on a screw thread to the corresponding point on the next thread
Flat belt
It offers long life, high efficiency and low cost and low maintenance
Fouling
It refers to any layer or deposit of extraneous material on the heat-transfer surface
Guide
Jigs are generally used for holding the job and __________ the tool
crank has a uniform angular velocity and crank has a non uniform angular velocity
Klein's construction can be used when
Chamfering
Knurling is done to __________.
To finish the job to a fine degree of accuracy, To get high quality of surface finish and To control the size
Lapping is done
Thinner materials
Laser beam machining process is used to machine __________.
Minimum and maximum
Limit gauge is made to the _________ sizes of the work to be measured
Cast iron
Liners are normally made of:
More than
Lip clearance angle for drilling soft materials should be ________ that for drilling hard materials.
Elastic limit
Material may be stretched and still returns to its former form / condition upon release of force is called:
Refractories
Material usually ceramics employed where resistance to very high temperature is required as for furnace linings and metal melting pots is called
Babbit
Metal that assists lubrication or lubricant in itself
12
No foundation bolts shall be less than _________ mm diameter.
major diameter
Nominal diameter of bolts is the
Granite
One of the materials used for making surface plate is
6 x 19
One of the most popular rope style is
Excess of acetylene
Reducing flame is obtained in oxyacetylene welding with
SAE 1117
SAE steel that responds to heat treatment
Light
The 200 series bearing is called
Pitch
The distance in inches a screw thread advances axially in one turn.
Backing
The distance parallel to the axis from the pitch circle to the face of the shoulder or hub.
Fade
The effectiveness of the brake may greatly decrease shortly after it begins to act continuously, a phenomenon called:
Free length
The length of coil sprig under no load.
Face width
The length of the gear tooth measured along an element of the pitch surface is called:
Can be changed
The lining of a brake shoe:
actual stress
The load acts over a smaller area, and the ________ continues to increase unit failure.
2%
The loss pair of spur, helical or bevel gears in an ordinary train should not exceed:
Shaper Machine
The machine, which can flatter surface on horizontal, vertical or angular plane.
Silicon
The main constituent molding sand is
Economical
The maintenance of mechanical brake is:
Time allowed to complete the job
The major factors, which determine the rpm of milling cutter, are the material being cut and the ________.
Yellow brass
The material for engine radiation is usually made of _________.
Elastic
The material recovers its original dimensions when the load is removed, it is called:
High speed
The material used in high speed processes.
1.0 bar
The maximum allowable working pressure of a non-code steel or wrought iron heating boiler of welded construction shall not exceed.
w L/8
The maximum bending moment of a beam simply supported at both ends and subject to a total load w uniformly distributed over its length L is expressed by the formula
420⁰F
The melting point of the filler material in brazing is approximately or above.
Head of tools only
The metal cutting wedge is fundamental to the geometry of
5
The minimum suggested design factor of ________ for ropes miscellaneous hoisting equipment.
stiffness
The modulus of elasticity is a measure of
Sliding fastener
The most common type of sliding action fastener and is widely used on doors is the
Morse
The name of a taper shank used to drill is
Arbor
The over arm of a milling machine is used to support
To modify the structure and properties of a cast metal
The pressure of inoculation is used:
Carburizing
The process of increasing the carbon content to surface of steel by exposing it to hot carbonaceous material above the transformation of 1650 to 1750 F
Upsetting
The process of increasing the cross-sectional area of a given portion or possibly of the whole piece.
Drawing
The process of lengthening a piece of stock while the cross-sectional area is being reduced.
Vector composition
The process of obtaining the resultant of any number of vectors.
Shaft balancing
The process of redistributing the mass attached to a rotating body in order to reduce vibrations arising from a centrifugal force.
Snagging
The process of removing burrs and the gates and risers left on casting after the molding process.
Bearing modulus
The product of absolute viscosity and rotational speed divided by the unit loading.
Thermal conductivity
The property of a material that indicates its ability to transfer heat
Contact ratio
The ratio of the arc of action to the circular pitch is known as:
Approach ratio
The ratio of the arc of approach to the arc of action
Carburizing
It is a process of hardening the outer portion of the metal by prolonged heating free from contact with air while the metal packed in carbon in the form of bone char, leather scraps, or charcoal.
Spinning
It is a special case of drawing in which the work is rotated and formed by means of a tool
measure of a distance
The ratio of the moment of inertia of the cross - section of the beam to the section modulus is
0°
The recommended value of rake angle for machining aluminum with cutting tools made up of diamond tool.
Fits
The relation between two mating parts with reference to ease the assembly is called
Translatory
The relative motion of work piece in planning is
(n+3)d
The solid length of squared ends is
Flash point
The temperature at which an oil gives off sufficient vapor without actually setting fire to the oil.
Total face width
The total width dimensions of a gear blank to the pitch plane.
1.25D to 2.4D
Typical hub length falls between
Pd(1-2μ)/2tE
Thin cylindrical shell of diameter d and thickness t when subjected to internal pressure P, if Poisson's ratio of material is μ ,the circumferential or hoop strain is
Cubic boron nitride
This particular cutting tool material could with stand cutting temperature of 1800 F and higher at cutting speed beyond possible with other cutting tool materials called:
axial tension loads
Ties are load carrying members that carry
Normalizing
To avoid brittleness of weld or the residual stress in the welding it is normally stress relieved of
2500 fpm
To avoid charring by the heat of friction, rawhide gears should not be operated of pitch line velocities greater than _____
Help feed the casting until all solidification takes place
What is the purpose of riser?
Aluminum
Which is the lightest metal
Vitrified
Which kind of bond is commonly used
Mica
Which medium has highest value of dielectric strength?
Top rake
Which of the following gives shearing action
Titanium alloys
Which of the following has the highest specific strength of oil structure materials?
Babbitt, Bronze and Plastics
Which of the following is a bearing material?
Mercury - oxide
Which of the following is a primary cell?
Ductile
Which of the following is a property of wrought iron?
Piston of an engine
Which of the following is an example of rectilinear translation?
Molybdenum disulfide, Graphite and Tungsten disulfide
Which of the following is an example of solid lubricant?
Wearing a canvass apron
Which of the following is an unsafe condition in operating a lathe machine?
Conformability, Embeddability and Compatibility
Which of the following is considered an advantage for bearing materials?
Gear box propeller shaft
Which of the following is mounted inside the clutch?
Shallow-groove ball bearing
Which of the following is not a type of ball bearing?
Overhauling
Which of the following is not the work of a machinist?
Center cut
Which of the following is not used to resemble the shape of tool bit?
Worm and worm wheel
Which of the following is used to connect the shafts at an angle but lying in the same plane?
Bronze Rim with Cast Iron Spider
Which of the following materials to be utilized to reduce cost in the manufacture of large worm gears?
0.45
Which of the following may be the Poisson ratio of a material?
Coupling
Which of the following mechanical devices is used for uniting or connecting parts of a mechanical system?
Manganese steel
Which of the following metals is easy to chisel?
Packing
_____________ to prevent leakage in dynamic seal.
A tensile fatigue
Tooth breakage on gear is usually:
is the ratio of the maximum stress produced in a cross section to the average stress over the section
nThe stress concentration factor
Clean the surface of small parts
Tumbling is done so as to:
Two tables
Divided table planer has
Manganese
A common deoxidizer and cleanser of steel forming oxides and sulfates that are carried off in the slag
Clearance between mating parts
Feeler gages are used for measuring the:
Lower temperature
Flash point is the __________ at which the sufficient vapor is given off from the oil without actual setting fire to the oil
6000
Flat leather belting not recommended for use in a speed in excess of ________ fpm
Single-cut fine-tooth file
For finishing a piece of work to size the file to use is the
Fastener
A device used to fix two or more parts
7000 to 8000 fpm
For leather belts, recommended speed is:
Negative
For machining cast iron in shaper, the tool ground with ______ rake angle.
6:1
For spur gear, the speed ratio is customary to limit the reduction of:
one-half
For steel, the ultimate strength in shear as compared to in tension is nearly
15
For three keys, a _________ percent overload often is used.
Brakes
Friction devices used to regulate the motion of bodies and with clutches
Silicon
A good general purpose deoxidizer which promotes fine grain in steel
Path of contact
A line drawn through all the points at which the teeth touch each other.
Soft iron
A material commonly used for shielding or screening magnetism
Traveling head
A job, which is fixed away from the table, can be machined by
Wrench
A tool used for turning nuts or bolts.
Wrought Iron
A product of padding furnace, which contains less than 0.10% carbon, is called
sliding and turning pairs
A scott-Russell mechanism is made up of
Deep-groove ball bearing
A type of roller bearing in which the balls are assembled by the eccentric displacement of the inner ring.
Atomic hydrogen welding
A welding where an arc is struck between two tungsten electrodes into which a jet of hydrogen is directed
Automatic drill
A straight brace for bits whose shank comprises a coarse-pitch screws sliding in a threaded tube with a handle at the end of the device is operated by pushing the handle called
Drilling and countersinking with a tool
Center drilling is the operation of
Higher speed
In a hydraulic driven shaper the metals is removed at
Vertical
In a vertical milling machine the spindle is attached ________ to the work table
double shear
In case of a knuckle joint, the pin is most likely to fall in
acme
The screw thread commonly used for transmission of motion is one of the following types of ___________ threads.
Resultant force
The single force which produces the same effect upon a body as two or more forces acting together is called:
Tip
The size of a flat file is measured from ________ to heel of the file
Diameter of wheel, Bore size and Width of face
The size of a grinding wheel is taken from
10 to 50 microns
The size of abrasive grains in abrasive a jet machining varies from
Grit
The size of abrasive grains produced by crushing process is called
Blade
The size of try square is measured from the inner edge of stock to the end of its _______.
Critical speed
The speed at which the center of mass will equal the deflecting forces on the shaft with its attached bodies will then vibrate violently, since the centrifugal force changes its direction as the shaft turns.
acme threads
The spindle of bench vises are usually provided with
Arbor
The spindle of the grinding machine on which the wheel is mounted
proportional to the displacement of the material acted upon by the force
The stress in an elastic material is
50
In shear pin or breaking pin design, we may use the date experience by Link-Belt for 1/8 inch pins and the breaking stress is __________ ksi.
20 deg
In spur gearing system, the preferred pressure angle is:
Completely reversed load
In testing the material for endurance strength, it is subjected to
SAE 5xxx
It has molybdenum alloy except:
Fixture
It is a device, which hold the job firmly
Cone center
It refers to the length of pitch cone in a bevel gear
Stronger the solder joint
The higher the melting pint of the solder, the
Thinner materials
Laser beam machining process is used to machine
Copper - zinc
Muntz metal contains which of the following alloys?
Increase the cooling rate
One of the following function is not performed by coating on the welding electrodes is to
Tapping tap
One of the following is not a tap used for cutting threads in holes.
Gun metal
One of the following materials is commonly used for bearings.
Plastic
One of the following materials is not mentioned for wire rope pulley / sheave applications.
Module
Ratio of pitch diameter to the number of teeth
Starvation
Refers to the process of separating or removing the burning of combustible material from the neighborhood of the fire.
One-third
Safe working stresses for common gear materials operating at very low velocities are usually assumed to be _____ the ultimate strength.
Safety notices in Markers / Boards
Safety features that must be placed and maintained at machine, black welding and foundry shops called:
Safety Notices in Markings
Safety features that must be placed and maintained at machine, blacksmith, welding and foundry shop is called:
Pins
Small pieces of metal clogged between the teeth on a file are called
Rough
Snagging is the form of ________ grinding.
Face of tooth
That surface of the tooth, which is between the pitch circles to the top of the tooth is known as _____.
Elasticity
The ability of material to return to its original shape after being elongated or distorted when the forces are released is called
It reduces the amount of heat generated, It improves the finish and It overcomes rusting
Soda added to water is used for cooling instead of plain water because
Lap weld
Test is designed primarily for application to electric-welded tubing for detection of lack of penetration or overlaps resulting from flash removal in the weld
Bend
Test sometimes referred to as upsetting test called:
Cone center
The apex of the pitch cone
Axial base pitch
The base pitch in the axial plane.
Dedendum
The depth of the tooth inside of the pitch line is called:
Chalking
The deterioration of organic coating characterized as completely _________
Flywheel
The device for smoothing out the power impulses from the engine is known as
load of the beam
The differential of the shear equation
Wheel dresser
The instrument used for reshaping a grinding wheel that is grounded or cut of round is called
Packing tools
The instrument used to remove old packing from packing glands and stuffing boxes are called
modulus of elasticity
The intensity of stress that causes unit strain is known as
unsupported length to its least radius of gyration
The slenderness ratio of a column is generally defined as the ratio of its
Hardening
The main purpose of ________ is to resist wear and unable it to cut the other metal.
Softer
The material for taps should always be _________ than the material of part to be tapped
Carbon
The material used for commutator brushes is mostly
Measure
The meaning of module in a gearing system is:
Contact diameter
The smallest diameter on a gear tooth with which the mating gear makes contact.
Central diameter
The smallest diameter on a gear tooth with which the mating gear makes:
45/55% tin and lead
The soldering material commonly applied for automobile radiator cores and roofing seams.
Gallium
The one that is an acceptor impurity element
300°F
The operating temperature of the Babbitt is limited to
Drilling
The operation of producing a circular hole by removing solid metal.
Lapping
The process of producing an extremely accurate highly finished surface.
π
The product of circular pitch and diametral pitch is:
118°
The point angle of twist drill to machine is
The casting unsound
The presence of sulfur in pig iron makes ____
the angle of rotation of the cam for a definite displacement of the follower
The cam angle is
Galvanizing
The process applied to iron pipe, which retards corrosion
modulus of elasticity
The ratio of stress to strain within the elastic limit is called
high-carbon steel
The regular materials for wire rope are made of
E = 2g(u+1)
The relation between modulus of elasticity E and modulus of elasticity in shear G, bulk modulus of elasticity K and Poisson's ratio is given by
Translator
The relative motion of work piece in planning is
Metallurgy
The science which deals with the preparation and application of metals and alloys.
a sudden break
The stress-strain curve for a glass rod during tensile test is
Transition temperature
The temperature at which this decrease of impact energy occurs is called:
120°
The three keys are angularly spaced
continuous beam
The three moment equation may be used to analyze a
Nose
The tool bit made of tool blank consists of face, nose, shank, and ________.
Whole depth
The total depth of a tooth space equal to addendum plus dedendum also equal to working depth plus clearance.
Whole Depth
The total depth of a tooth space, equal to addendum plus Dedendum
3:2
The usual ratio of forward and return stroke in quick return mechanism of shaping machine is
1:1
The usual ratio of miter gear is:
4 to 80 water to 1 oil
The usual ration of water to soluble oil used as cutting fluid is _________.
30°
The usual value of helix angle of a drill is:
423 kg/cm^2
The value of allowable stresses which are generally used in practice for line shafts carrying pulleys is
282 kg/cm^2
The value of allowable stresses which are generally used in practice for main transmitting shafts is
599 kg/cm^2
The value of allowable stresses which are generally used in practice for small, short shafts, countershafts is
500 psi
To avoid excessive wear rate the recommended limiting pressure for 6 x 19 rope is ___________ for cast iron.
2500 psi
To avoid excessive wear rate the recommended limiting pressure for 6 x 19 rope is ___________ for manganese steel.
Dressing
To avoid slip or creep, the resin powder or paste is poured in between the outer surface of pulley and belt for increasing at tension. This process is known as
Double-cut bastard and Rasp
To remove metal stock rapidly the file to use is a
Forging
Upsetting is the term used in one of the following operations
0.20
Used as cast condition steel casting with carbon content less that __________ % C.
Taper pins
Used for the attachment of levers, wheels and similar devices onto shafts for light-duty service.
Plunger knob
Used to permit lever shift for vertical travel of rail
It saves the labor charges, It saves the material from wastage and It saves the time
What is it necessary to provide tolerance?
A vent hole to allow for the hot gases to escape
What is referred to as gate?
47xx
What is the SAE specification number of molybdenum - chromium - nickel?
Mild steel
What is the most common material for shafting?
Zinc chloride
What is the most commonly used flux for brazing?
5
What is the spring index of valve and clutch?
Depth micrometer
Which micrometer has no anvil
Inside micrometer
Which micrometer is available with extension rods
Steam welding
Which of the following produced a series of spot welds made by circular or wheel type electrodes?
Tangential load
_______ is the average tangential force on the teeth is then obtained from the horsepower
Clearance
_______ is the difference of addendum and dedendum, which is equivalent to the whole depth less working depth.
Scoring
_______ occurs when the oil film fails but in this case, the load and speed are so high that the surface metal is melted and the metal is melted and the metal is smeared down the profile.
Lathe centers
________ are hardened steel devices with a taper shank on one end and a 60 degree point at the other end.
Unilateral
_________ are generally used on those dimensions involved in a fit
maximum load during test / original cross-sectional area
tensile stress of a material is given by
flange coupling
used for collinear shafts
Dead Center
¬____ is a kind of center, which is being attached and meshed to the tailstock spindle, which is also static while the rack is rotating.
lower pairs
A Pantograph is a mechanism having
Rack
A _____ is a spur gear of infinite diameter.
Back Cone
A ______ formed by elements, which are perpendicular to the elements of the pitch cone at the large end.
Plug gage
A ______ is used to be test the accuracy of holes
beam
A ________ member that carries loads transverse to its axis.
Milling attachment
A _________ consists of a slide and swivel vise mounted on the compound rest in place of the tool post.
Sine bar
A _________ consists of hardened and ground steel bar in which two hardened and ground of the same diameter are set.
Worm
A _________ is a cylinder with teeth resembling those of acme thread.
square thread
A _________ is a kind of thread in which the width of the thread and the space UNCbetween threads are approximately equal.
Plain bearing
A _________ is formed when a shaft rotates in a bush, lines of the bore of a housing.
Coolant
A __________ is used between the cutting tool and work piece to minimize the friction heat.
Feeler
A ___________ gage is used to check the clearance between the mating parts
Single thread
A ___________ is a thread that has a lead equal to the pitch.
Long bearings
A bearing in which the length ratio Length/diameter is greater than 1.
Dead Center
A center, which is fitted in tailstock spindle called
Root circle
A circle coinciding with or tangent to the bottoms of the tooth spaces.
Pitch Circle
A circle the radius of which is equal to the distance from the gear axis to the pitch point
High Carbon Steel
A cold chisel is made of:
Laser welding
A collimated light beam is used for producing heat in
the length is less than 8 times the diameter
A column is called short column when
1.2√t to 1.4√t
A common rule is to make the rivet hole diameter from ________ for rivets in single or double shear.
Adamantine Drill
A core drill with hardened steel shot pellets that revolve under the rim of the rotating tube, employed in rotary drilling in every hard ground.
Hydraulic coupling
A coupling that employs a fluid to provide angular flexibility between the input and output shafts.
Falk coupling
A coupling that is composed of two slotted members, which are connected by a continuous steel spring, and lies in the slots.
Flange compression coupling
A coupling that transmits power via the frictional forces induced by pulling the flanges toward each other over slotted tapered sleeves is known as
less than 0.
A cylinder in which the ratio of the wall thickness to the inside diameter is ___________ may be called a thin cylinder
Tap
A cylindrical bar of steel with threads formed around it and grooves or flutes running lengthwise in it, intersecting with the threads to form cutting edges. It is used to cut internal threads.
Tap
A cylindrical bar or steel with threads formed around it and grooves or flutes running lengthwise in it, intersecting with the threads to form cutting edges. It is used to cut internal threads.
Chuck
A device for holding grinding wheels of special shape or the working piece being grounded.
Seal
A device used to prevent leakage of media.
Appreciable plastic deformation prior to propagation of crack
A ductile fracture is characterized by
sunk
A feather key is one of the following types of
Key way
A female mating member that forms a groove in the shaft to which the key fits.
Blunt file
A file whose edges are parallel is known as
Full-fillet weld
A fillet weld whose size is equal to the thickness of the inner joint member is called
Oilstone
A fine grained salty silica rock used for sharpening edge tools.
Oilstone
A fine grained, salty silica rock used for sharpening edged tools.
Worm wheel
A gear wheel with cured teeth that mesh with a worm.
Silicon carbide
A grinding wheel which has got the marking °C, is made with the abrasive
Feeler Gage
A group of thin steel strips used for measuring clearances.
Four positions
A hacksaw blade can be placed in a frame in
Thin wall tubing
A hacksaw blade with 34 teeth per inch should be used for cutting
Aluminum, Cast iron and Solid Iron
A hacksaw blades with 18 teeth per inch is best suited for cutting
Distortion gage
A hand tool used to measure engine crank web deflection.
Torque wrench
A hand tool used to measure tension in bolts
Torque wrench
A hand tool used to measure tension in bolts.
Flywheel
A heavy rotating body which serves as a reservoir for absorbing and redistributing kinetic energy.
Diamond
A highly transparent and exceedingly hard crystalline stone of almost pure carbon is called
Mandrel
A holding device used to hold the job properly when turning the outer surface truly with the finished hole called
Clutch plate
A hydraulic clutch doesn't incorporate a:
A single welded lap joint
A joint between to overlapping members in whom the overlapped edge of one member is welded with a fillet weld is called
Pin key
A key may either straight or tapered. It is usually a drive fit.
Independent Chuck
A kind of chuck, which has reversible jaws, which could be adjustable separately called:
UNC
A kind of thread that is generally used.
Pyramidal form
A knoop intender is a diamond ground to a __________.
Flywheel
A large rotary machine part whose function is to store energy and to produce uniform angular velocity of the shaft or reciprocating engine.
Lag screw
A large wood screw is used to fasten machinery and equipment to a wooden base.
Turret lathe
A lathe with multiple cutting stations is called:
Main shaft
A line shaft is also known as
Mercury
A liquid metal is called _________
Hard drawn wire spring
A low cost spring material, suitable where service is not severe and dimensional precision is not needed.
Cotter
A machine element inserted at right angle to the axis shaft is known as
Bending machine
A machine for bending a metal or wood part by pressure is known as
Lathe
A machine for shaping a work piece by gripping it in a holding device and rotating it under power against a suitable tool for turning, boring facing or threading.
Milling Machine
A machine for the removal of metal by feeding a work piece through the periphery of a rotating circular cutter.
Attrition mill
A machine in which material are pulverized between two toothed metal disks rotating in opposite directions.
Key
A machine member employed at the interface of a pair of mating male and female circular cross-sectioned members to prevent relative angular motion between these mating.
Bearing
A machine part that supports another part, which rotates, slides or oscillateds in or on it
Gear shaper
A machine that makes gear teeth by means of a reciprocating cutter that rotates slowly with the work.
Tool Grinder
A machine tool in which an abrasive wheel is used as cutting tool to obtain a very smooth finish.
Planer
A machine tool used for large construction
Charpy Test
A machine used in testing steel generally strikes the specimen with an energy from 22- t0 265 ft-lb/
Planning
A machinery operation whereby done with the work accurately fastened has a reciprocating motion and the tool head is stationary is called:
Milling
A machinery operation whereby the tool rotates while the feed is stationary.
SAE 1320
A manganese steel containing approximately 0.20% carbon
Abrasive
A material that can wear away a substance softer than itself is called
Sap wood
A material that should be avoided in constructing wood pattern is:
Annealing
A material used in softening a piece of metal that is too hard to machine and is done by heating steel slowly above the usual hardening temperature keeping it at the heat for ½ to 2 hours then cooling slowly, preferably in a furnace
design factor
A measure of the relative safety of a load-carrying component is termed as
Wrought Iron
A mechanical mixture of very pure iron and a silicate slag
Dividing Head
A mechanism, which usually do the indexing in a machine tool called:
Zinc
A metal which has a high electrical conductivity but should not be used for high temperature.
File
A multi pointed hand anything tool used to remove material from metallic non- metallic work places to match withdrawing shape and size
Vise
A notching/ holding device which is used to hold, or grip work place while filing, chipping or any other bench work or when machining or drilling them
Metal spray welding
A of welding whereby a wire or powder from the nozzle of a spray gun is fused by a gas flame, arc or plasma jet and then molten particles are projected in a form of a spray by means of compressed air or gas is known a
couple
A pair of forces equal in magnitude opposite in direction, and not in the same line is called
Dull yellow sparks
A piece of cast iron hold against an emery wheel will give of
Light straw - colored sparks
A piece of mild steel held against an emery wheel give off
White sparks with stars on the end
A piece of tool steel held against an emery wheel will give off
One safe edge and Two safe edges
A pillar file has
Filing against a shoulder, Filing keyways and Filing slots
A pillar file is used for
Clevis pins
A pin that is cylindrical in shape with a head on one end and a radial through hole in the other end.
Normal plane
A plane normal to the tooth surfaces acts a point of contact and perpendicular to the pitch plane.
Transverse plane
A plane perpendicular to the axis plane and to the pitch plane.
Tangent plane
A plane tangent to the surfaces at a point or line of contact.
universal planer
A planer which has a cutting action in both strokes in
Cylindrical bores
A plug gauge is used to measure
Belt sander
A portable sanding tool having a power-driven abrasive coated continuous belt is called
Stress rupture test
A preliminary evaluation of the elevated temperature properties of materials may be secured by means of a
Automatic press
A press in which mechanical feeding of the work is synchronized with the press action.
Graphite electrodes
A problem-by product used as an electrode in an electric arc furnace melting operations is called:
Above recrystallization temperature
A process can be considered as a hot working process if the material is heated
Auto frettage
A process of prestressing or over stressing a hollow cylindrical member beyond the elastic range by hydraulic pressure.
Heavy
A puncher slotter is used for ______ stock removal.
Size and roundness of a drilled hole
A reamer is used to correct the
heterogeneous material
A reinforced concrete beam is considered to be made up of
Heterogenous
A reinforced concrete beam is considered to be made up of:
MIRDCC
A research agency handling assistance to all foundry, machine shop and metallurgical plant operation.
The first and last gear are essentially on separate but parallel shafts
A reverted gear train is one in which:
Boring bar
A rigid tool holder to machine internal surfaces is called:
4.0 hp
A single ply leather belt running at a belt velocity of 300 ft/min is likely to transmit _____ per inch of width
4.0 hp
A single ply leather belt running at a belt velocity of 300ft/min is likely to transmit ____ per inch of width
keeps appropriate
A slip joint ________ the length of propeller shaft.
Breast drill
A small portable hand drill customarily used by hand setters to drill holes in breast called
Gold
A soft yellow metal, know since ancient times as a precious metal which all materials values
It is elastic.
A specimen is subjected to a load. When the load is removed the strain disappears. From this information, which of the following can be deducted about this material?
Chromium-silicon
A spring wire with good quality for impact loads at moderately high temperature
A tool used in mould repairing
A sprue is:
Kennedy key
A square taper key fitted into a keyway of square section and driven from opposite ends of the hub is known as
Axle
A stationary member carrying pulleys, wheels and etc. that transmit power is called:
None of these
A stud is one which:
Axle
A supporting member that carries a wheel and either rotates with the wheel to transmit mechanical power to or from it, or blows the wheel to rotate freely on it is called
It can resist more heat, It can keep the cutting point sharp and Cutting speed can be increased
A tipped tool is more useful than H.S.S. tool because
60° angle
A tool bit for cutting an American National Thread should be ground with a
Caliper
A tool used for measuring diameters.
Mandrel
A tool which when pressed into a finished hole in a piece of work, provides centers on which the piece may be turned or otherwise machines called:
Divider
A tool with hardened steel points used for scribing or laying of distances.
Angle cutter
A tool-steel cutter used for finishing surfaces of angles greater or less than 90° with its axis of rotation is called ________.
Vitrified bond
A type of bonding material, which is made of clay and water.
Garter spring
A type of coil where the helical coil is wrapped into a circle forming an annular ring
Elastic material bushed coupling
A type of coupling that allows slight amount of torsional angular flexibility due to introduction with some elastic material cylindrically wrapped around the bolts in the flange.
Oldham coupling
A type of coupling used to connect shafts that have lateral misalignment.
Buckling
A type of failure due to instability is known as
Skew bevel gears
A type of gear of non-parallel and non-intersecting and the teeth are straight.
Internal Gear
A type of gear tooth cut inside a cylinder or ring is termed as:
Hypoid gear
A type of gear wheels connecting non-parallel, non-intersecting shafts usually at right angles.
Worm gear
A type of gear, which is used for heavy duty work where a large ratio of speed is required.
6 x 37 IWRC
A type of rope used for lines, hawsers, overheated cranes, hoists.
Motor spring
A type of spring where thin flat strip wound up on itself as a plane spiral, usually anchored at the inside
Barth key
A type of square key with bottom two corners beveled is called
Hot forging
A vent wire is used in
Fillet weld
A weld of approximately triangular cross-section that join two surfaces at approximately right angles as in lap joint, tee joint, corner joint.
Butt weld
A weld place in groove between two butting members is called
Brazing
A welding operation in which a nonferrous fillet metal at a temperature below that of the metal joined but is heated above 450C
Gas welding
A welding operation that uses hot flame and metal rod is known as
Regular lay
A wire rope that the wires and strands are twisted in opposite direction.
Lang lay
A wire rope that the wires and strands are twisted in the same direction.
American Gear Manufacturer Association
AGMA means:
0.95%
AISI C1095 designates that it is a basic open hearth carbon steel having ________percent carbon
stiffness
Ability to resist deformation under stress is called:
20
According to W.M. Griffirth, the critical frequency of the spring should behold at least ________ times the frequency of application of a periodic load.
13.75 lb/ply per inch of width
According to the Goodrich company, the permissible net belt pull is ____ that it gives a simple means for quick estimation
None of these
According to the law of gearing:
turning pairs
Ackerman steering gear is made up of
Epicycloid
Addendum of a cycloidal gear tooth
An improvement in machinability
Addition to lead and bismuth to aluminum will produce:
Southeast Asia Iron and Steel Institute
All are associated with standard material specified except ________.
SAE 74xx
All are associated with the grade of steel except:
Adhesion
All are functions of lubricating oil except
Brass, Cast Iron and Tool steel
All hard hacksaw blade is best suited for work on
Has the entire blade hardened
All hard hacksaw blade is one that
Mps
All terms and abbreviations deal with wire rope arrangement except this ________ which deals with rope materials strength .
5000 to 8000 psi
Allowable stresses in shear equal to ________ are common in design of a shaft.
Equal to half of the ultimate strength
Alloy steel axle under repeated load / stress will eventually fail if the load / stress is above the endurance for the steel under consideration. The endurance limit of the steel is:
equal to half of the ultimate strength
Alloy steel axle under repeated load/stress will eventually fail if theload/stress is above the endurance for the steel under consideration. The endurance limit of the steel is therefore
Chromium-moly steel
Alloy steel known for its resistance to corrosion, abrasion and wear that is usually ideal for mill grinding of ore or cement and concentrator application. It is usually combined with molybdenum to increase the depth hardening.
Offset bearing
Also called eccentrically loaded bearing
Must possess considerable fluidity
Aluminum alloys for pressure die casting
Forged
Aluminum pistons are either cast or
Away from the center of crack disc
Amount of automatic feed in shaper is increased by taking the crank pin
Blanking
An act of cutting out a piece of metal at a desired shape and size.
Feed
An advance motion along the longitudinal axis of a twist drill is called
Brass
An alloy of copper and zinc
Babbitt
An alloy of copper, tin and antimony.
Bronze
An alloy of copper, tin and small amount of phosphorous
Steel
An alloy of iron and carbon in which the carbon content does not exceed 1.7%.
Monel
An alloy of nickel and copper
Babbit
An alloy of tin, copper, antimony or sometimes lead
Tungsten, Molybdenum and Chromium
An alloy that improves strength of steel at high temperature application.
Glass
An amorphous solid may be fusing silica with a basic oxide
Tip relief
An arbitrary modification of a tooth profile whereby a small amount of material is removed near the tip of the gear tooth.
Hold
An arbor is used to _______ an drive the milling cutter.
Spring
An elastic stored energy machine element that when released, will recover its basic form
Forged steel
An engineer's hammer is made of
6 x 37
An extra flexible rope is
Pitch Circle
An imaginary circle passing through the points at which the teeth of the meshing gears contact each other.
Pitch circle
An imaginary circle passing through the points at which the tooth of the meshing gears contact each other.
Back cone
An imaginary cone whose elements are perpendicular to the pitch cone elements at the large end of the tooth.
Cutter
An important accessory of milling machine.
Scleroscope
An instrument used for determining the relative hardness of materials by a drop and rebound method.
Profilometer
An instrument used for measuring the degree of surface roughness in micro inches.
Tack weld
An intermittent weld, lightly done to hold the members in position for assembly purposes or for principal welding
Tack weld
An intermittent weld, lightly done to hold the members in position for assembly purposes or for the principal welding.
Eutectic
An intimate mechanical mixture of two or more phases having a define composition and a definite freezing melting point.
Malleable cast iron
An iron has physical properties closely resembling those of mild steel called
White iron
An iron in which most of the carbon is chemically combined with the iron is called
Tacomite
An iron-bearing slate or chert in the form of compact siliceous rock.
initial velocity
An object thrown upward will return to earth the magnitude of the terminal velocity equal to
0.01 in. per foot
An old rule of thumb for transmission shafting is that the deflection should not exceed ____________ of length between supports.
Boring
An operation to enlarge the previous drilled hole
Center drilling
An operation to make smaller hole in exact center for lathe center.
Lips of drill are of unequal length
An oversize hole is produced by a drill if
Insulators
Any material that retard the flow of electricity used to prevent or escape of electric current from conductors
Plane rotation
Any plane perpendicular to a gear axis is called:
Welding stainless steel
Arc blow takes place in
Sr - Sh = constant
Assuming longitudinal strain to be constant at any point in the thickness of the cylinder, the radial stress Sr and hoop stress Sh are related as
outermost
At a given section of an I beam the maximum bending stress occurs at the
200F
At higher temperature, the oil oxidizes more rapidly above
shear is zero
At highest or lowest point on the moment diagram
Chromium
At small quantity, this alloy is effective for improvement strength at high temperature
Full bearing
At the same thermal and minimum film, thickness limitation as sleeve
Plowing action
At very low cutting speeds the tool wear is due to
Computer Numerical Control
CNC in machine shop means
Diamond
Carbide and ceramic tools are ground on ______ grinding wheel.
Speeds less than that when using a high speed drill
Carbon steel drill should be operated at
Chrome-nickel steel casting
Cast alloy steel for very high temperature application
2 to 4
Cast iron contains _____ % carbon.
0.23 to 0.65
Cazand quotes values for steel showing Sn/Su ratios, often called endurance ratio, from
Negative rake angle
Cemented carbide and ceramic cutting tools are usually provided with
1000 C
Cemented carbide tipped tools can machine metal even when their cutting elements get healed up to the temperature of ___________.
1000°C
Cemented carbide tipped tools can machine metal even when their cutting elements get heated up to a temperature of
Negative back rake angle
Cemented carbide tools are usually provided with
Negative back rake angle
Cemented carbide tools are usually provided with:
20000 to 50000 rpm
Centrifugal separators that operate at speeds ________ also employ these flexible shafts.
SAE 514xx
Chromium steel to include heat and corrosion resistant designation.
Three jaws independent chuck
Chuck used on turret lathe is
Transmission system
Clutch gear box, differential etc. are the parts of:
Overrunning clutches
Clutches which are designed to transmit torque for one direction of rotation of the driver and then free-wheel or transmit essentially no torque when the direction of the driver rotation is reversed.
Increase hot hardness
Cobalt is added to high speed steel to
Low
Coefficient of friction in anti-friction guide ways is:
Hard drawn
Cold drawing is also called:
stronger
Cold drawing produces a ________ shaft that hot rolling, but with higher residual stresses.
Harder
Cold working of steel plates make the metal
Blow / pin holes
Common defects encountered in a foundry shop steel casting operation and also in welding practices.
SAE 1030
Commonly utilized/cheapest shaft material available in the market with carbon content of 0.28 to 0.4?
5-7
Compressive strength of a gray cast iron in tone per cm2 is of the order of:
Dial test indicator
Concentricity of an outside diameter can be checked by
Ball bearing
Conrad bearing is also known as
80
Consider a maximum safe center distance of should be _____ pitches. Very long center distance caused catenaries tension in the chain
High speed steel
Consist of carbon and alloy used in production of precision work tools
Intermittent weld
Consists of short lengths (2 to 3 inches long) of welds with space between as 6 inches on centers.
Ductile materials
Continuous chips are formed when cutting
Creep
Continuous stretching under load even if the stress is less than the yield point is known as:
Concave surface
Convex shaped slotter tools are used for machining
Cooling slowly in water
Copper is annealed by heating to a cherry red color and
Cooling slowly in air
Copper is annealed by hunting to a cherry red color and
Hollow
Cores are used in mould to make it
Temperature between 1400°C and 1539°C
Delta iron occurs at:
Seal
Device used to prevent leakage of media.
Moisture content, Thickness and Temperature
Dielectric strength of a material depends on the material's
Fineness
Dilatometer is use to find out which property of molding sand?
Providing for shrinkage of the coating
Draft on a pattern is provided for.
The formation of oxides on them molten metal surface
Dressing is
Ineffective
Due to air effect, the hydraulic brakes become:
Mild steel
During tensile testing on a specimen cup and cone formation is observed with _______.
hard fiber or nylon cotter is recessed in the nut and becomes threaded as the nut is screwed on the bolt causing a tight grip.
Elastic nut is a locking device that has
Thin walled parts requiring a high order of accuracy and internal surface finish
Electro-forming is especially valuable for
High melting point and low thermal conductivity
Electron beam machining process is quite suitable for a material having
cam shaft
Engine valves get open by means of
Valve spring
Engine valves get shut by means of
0.80%
Eutectoid steel the percentage of carbon is
4000 to 4500 fpm
Experience suggests that the most economical designs are obtained for a belt speed of:
10%
Experimental data from actual gear unit measurements are seldom repeatable within a plus or minus ______ band
10 to 15%
Experimental results indicate that the actual frequency of the spring is from
8 to 10
External pressure tubes in boilers are designed with an apparent factor of safety of
6 x 37
Extra flexible hoisting rope applications is
Below 723 oC
Ferromagnetic alpha iron exists in temperature range of:
Carbon
Ferrous metals contain a relatively large amount of
Single-cut and double-cut
Files are divided into two general classes, namely
Reduce concentration of stress and extend life of the parts
Fillet radius in machine parts is usually introduced to:
Draw-filing
Finishing off a piece of metal with a real smooth finish can be done by
Case hardened mild steel
Fixture clamps are generally made of
Packing
Flexible material used to seal pressurized fluids normally under dynamic conditions.
Packing
Flexible material used to seal pressurized fluids, normally under dynamic condition.
is zero at the axis and linearly increases to a maximum value at the surface of the shaft
For a circular shaft subjected to torque the value of shear stress
Increase
For a given rpm, if the diameter of a twist drill increases, then cutting speed will
L = 2/3(J+2)
For kinematics chains formed by lower pair the relation between the number of joint J is given by
Face plate
For machining the flange elbow on a lathe which of the following holding devices is used?
27
For maximum quietness, use sprockets with _____ or more teeth
1.25 - 4.00
For moderate speed of mating gears, the ideal ratio contact is:
10 to 30
For ordinary turning drilling and milling on low strength steel the cutting fluid applied have soluble oil with consistency of part oil to _______ parts water.
1.5
For shaft, the minimum value of numerical combined shock and fatigue factor to be applied in every case to the computed bending moment is
1.5
For spring subjected to light service, the factor of safety __________ is suggested
Inside micrometer
For the accurate measurement of bores , the best instrument is
30 t0 50
For the average application a center distance equivalent to ____ pitches of chain represents good practice.
50<Vm>200 fpm
For thrust bearing the speed at moderate operating conditions is
20
For transmission shafts the allowable deflection is one degree in a length of _________ diameters.
0.5 Dwo
For worm gears, Buckingham recommends face width.
3
Foundation bolts of specified size should be used and surrounded by a pipe sleeve with an inside diameter of a least ________ times the diameter of the anchor bolt.
dead
Front axle should be live and
Thermit welding
Fusion welding is the name frequently given to processes not requiring pressure. It is sometimes called
Zinc
Galvanized iron is a term referring to iron coated with:
Zinc
Galvanized steel plate is:
Between 910°C and 1400°C
Gamma iron exists at the temperature range
Low and medium pressure
Gear pump used in hydraulic system are used for:
Low and medium pressure
Gear pumps used in hydraulic system are used for _________.
Friction Gearing
Gearing in which motion or power that is transmitted depends upon the friction between the surfaces in contact
Left hand
Generally spiral fluted reamer has spirals of
Flat
Generally, shaper is used for machining ________ surfaces.
Forward
Generally, shaper tool cuts metal on the ______ stroke.
Chrome copel, Chrome alumei and Platinum rhodum
Generally, the material for thermocouple is
Columbium, Titanium and Tantalum
Good stabilizer in stainless steel is:
Arc
Grey cast iron is best welded by
Reduce the friction between the wheel face and the job, Lubricate and Prevent loading of wheel
Grinding fluids are used to
Metal finishing operation
Grinding is
High accuracy is required
Grinding is done wherever
Metal finish operation
Grinding is what type of operation?
Snagging
Grinding the gates, fins and sprues from casting is termed as
Fluting
Grinding the grooves of a twist drill or tap.
Positive rake angle
HSS cutting tools are generally provided with
24 teeth
Hacksaw blade that has the same number of teeth as given below are available. Which one would you chose for cutting brass?
Fine grain
Hardened steel parts have
Carburizing
Hardening the surface of the iron-based alloys by heating them below the melting point in contact with a carbonaceous substance.
Turn buckle
Has left hand threads on one end and right hand threads on other end
Nickel and molybdenum
Hast alloy contains:
Stress relieving
Heating to a sub-critical temperature about 1,100F to 1300F and holding at that temperature for a suitable time for the purpose of reducing internal residual stresses is called
Stress = E (strain)
Hooke's law for an isotropic homogeneous medium experiencing one dimensional stress is known as
Lead pencil
How is aluminum work piece marked?
√t
If "t" is the thickness of sheet to be spot welded then electrode tip diameter is equal to
Pearlite
If 1080 steel is annealed by very slow cooling from 1000 C to ambient temperature, its microstructure will consist almost solely of:
ZN/P
If P = bearing pressure on projected bearing area, Z= absolute viscosity of lubricant, and N = speed of journal, then the bearing characteristic number is given by
Will rotate reverse direction
If a big gear is moved by a small gear then the big gear
Close its temper
If a drill speed is too great, it will
Pitting
If a set of spur gears are made installed and lubricated properly, they normally may be subjected to failures like:
1.2 d
If a square key and shaft are to be of the same material and of equal strength the length of key would be equal to
triaxial
If all the principal stresses have finite values, the system is
Cycloidal Gears
If gears cannot, parallel shafts, they are called:
Remaining acid form eating the metal
If muriatic acid is used as a flux, the soldered area must be cleaned thoroughly afterwards to prevent
biaxial
If one principal stress is zero, the state stress is
Greater than 60 deg
If the angle of contact is ______, the pressure between the brakes shoe and the drum cannot be considered uniform:
The hole will take longer to drill and more power is required to drive the drill
If the angle on a drill is less than 59°
the square beam is more economical
If the areas of cross-sections of square and circular beams are the same and both are put to equal bending moment then the correct statement is
Band brake
If the band warps partly around the brake wheel or drum and brake action is obtained by pulling the band tight onto the wheel. This type of brake is known as:
Slip
If the belt is loosely fitted on pulleys, _________ slips down.
10°
If the clearance of a cutting edge is 5°, the lip (wedge) angle in 75°, the rake angle will be
The hole will be larger than the drill
If the cutting edges of a drill are cut at different angles
67.5 degrees
If the lead angle of a worm is 22.5 degrees then the helix angle will be ______
50%
If the pulley ratio is 3:1 or more, the reduction should be:
Ion pairs missing in ionic crystals
Imperfections within metallic crystal structures may be all of the following. EXCEPT:
800 amps/cycle of work piece area
In ECM process thermal current requirement is
Gear
In _________ type shaper, the reciprocating movement of the arm is affected by means of a rack and pinion.
maximum at the wall
In a cantilever beam with a concentrated load at the free end, the moment is
the length of the column
In a column (slenderness ratio > 160), which of the following has the greatest influence on its tendency to buckle under a compressive load?
Joined to their couple
In a constant mesh gearbox, all the speed gears remain:
Nose
In a cutting tool, the cutting end can also be generally called:
Axial plane
In a pair of gear, it is the plane that contains two axes in a simple gear; it may be any plane containing the axes and the given point.
Pitch Plane
In a pair of gears, _____ is the plane perpendicular to the axial plane and tangent to the pitch surface.
Pitch plane
In a pair of gears, it is the plane perpendicular to the axial plane and tangent to the axial plane and tangent to the pitch surfaces.
Pinion
In a pair of gears, spur or bevel, the smaller is often called:
At return stroke
In a planer the feed is provided
Relative strength
In a pressure vessel, the ratio of minimum strength of joint to the strength of solid joint is known as
5
In a pressure vessel, the usual factor of safety may be taken as
Meter per minute
In a shaper the cutting speed (metric) is expressed in
mm/ stroke
In a shaper the feed (metric) is usually expressed in
Cutting
In a shaper, the _______ strokes takes place.
Material to be cut, Material of the slotter tool and Finish required
In a slotter the cutting speed depends upon
Three
In a slotter, the table gets ______ different feeds
allowable stress
In a specification schedule is used when the pipe specified as "schedule 80", the pipe corresponds to the
1°
In a standard dividing head 3 inches in 27 holes circle will index:
Two
In a straddle milling operation how many cutters are used to mill the work
Offset yield stress
In a stress-strain diagram what is the correct term for the stress level at e = 0.20% offset?
Copper
In a typical lathe machining, discontinuous chips of ¬_____ are formed when machining
Central plane
In a worm gear, _____ is a plane perpendicular to the gear axis and contains the common perpendicular of the gear and the worm axis.
Base pitch
In an involute gear, _____ is the pitch on the base circle or along the line of action.
The percentage of carbon is less than 1.7%
In carbon steel castings
Changing its inclination
In case of a flat scraper, the depth of cut s verified
two pairs and two pairs slide
In case of an elliptical trammel,
Non-parallel/non-intersecting
In case of cross helical worm, the axes of two shafts are:
One module
In case of gears, the addendum is given by
The part of the tooth surface lying below the pitch surface
In case of spur gears, the flank of the tooth is:
30°
In collet, the included angle of taper is usually
By shearing along oblique plane
In compression, a prism of brittle material will break
direction of twist in strands is opposite to the direction of twist of strands
In cross or regular lay ropes the
80
In drilling soft materials use cutting angle as low as 40 degrees but for extremely hard material up to _____________ degree is recommended.
shear forces
In flange coupling the flange bolts are designed for
Single-cut and double-cut
In general, files are divided into two classes, namely:
5%
In general, steel spring are made of relatively high carbon steel usually
110 deg
In high speed, centrifugal blowers, it has been observed that the arc of contact reduced from 180 deg at rest to _______ in motion
Oil
In hydraulic shaper the reciprocating movement of the arm is obtained through ______ pressure.
The oil film pressure is generated only by the rotation of the journal
In hydrodynamic bearings
Opposite direction
In internal cylindrical grinding, the grinding wheel and the work rotate in
Angle of obliquity
In involutes teeth, the pressure angle is often defined as the angle between the line of action and the line of tangent to pitch circle. It is termed as:
Economy
In laminated spring the strips are provided in different lengths for
10 ≥ μ ≥ 1
In machine tool drive, the modulus for gears is usually selected between:
Sintering
In powder metallurgy, the process of heating the cold pressed metal powder is called:
165o
In practice, it is found that arcs less than ______ required high belt tensions.
long side
In pure torsion, the minimum torsional stress occurs at the
Crank length
In quick return mechanism of shaping machine the ram stroke length is proportional to
Crank length
In quick return mechanism of shaping machine, the ram stroke length is proportional to
Linear pitch
In rack gear, circular pitch is called:
After the weld cools
In rsistance welding, the pressure is release
Return
In shaper, the tool is fed at the end of _______ stroke.
Metal is poured into die cavity and after a predetermined time the mould is inverted to permit a part of metal still in the molten state to flow out of cavity
In such casting process:
% of carbon content
In the SAE identification code of steel shafting, the 3rd and 4th digits represents the content of:
Broaching
In the list of process given below, the chip removal process is the
Spinning on lathe
In the list of process given below, the non-chip removal process is
propeller shaft
In the overdrive transmission system the rotation speed of ________ rest higher than that of engine's speed.
8 in.
In the selection of the proper belt, it is not considered good practice to use single-ply leather belts more than ____ wide
twisted in opposite direction
In the selection of wire rope, regular lay means wires and standards are arranged in 1the following manner _________
Yield strength
In the stress-strain diagram where there is a large increase in strain with little or no increase in stress is called
primary and main shafts
In the top gear, the rotational speeds of _________ remain the same
Against the rotating cutter
In up cut milling the work piece is fed
200 to 240 psi
Initial tensions should range from ___ for leather belts and 10 to 12 lb/ply per inch of width for rubber belts
Antimony
Intrinsic silicon becomes extrinsically conductive, with electrons as majority carriers when adopted with which of the following?
Embrittlement
Involves the loss of ductility because of a physical or chemical change of the material is known as
Tolerance
Is the permissible variation of the size of a dimension.
Apron
It acts the carriage or compound rest through the mechanism lifted inside the __________
Radial load
It acts toward the center of the bearing along a radius.
Cast iron
It cannot be forged because it will break if heated and beaten by hammer
Thrust bearing
It carries a load collinear to the axis of possible rotation of the supported member.
Flexible coupling
It connects the shafts with soft materials such as rubber, leather and canvas
fatigue failures
It has been said that 80% of the failures of machine parts have been due to
vector quantity
It has magnitude, direction and sense.
Cobalt
It improves red hardness of steel.
Specific gravity
It indicates how many times a volume of material is heavier than an equal volume of water.
Nitriding
It is a case hardening process in which work piece is heated in a stream of ammonia at 500 to 550°C
Jig
It is a device, which hold the job in position and guide the cutting tool.
Cutting tool
It is a device, which is used to change the shape of a piece by removing material in the form of chips
0.010
It is a good design practice for steel line shafting to consider a limit to the linear deflection of ________ inch/foot length maximum.
Arbor hole
It is a hole in revolving cutter or grinder wheel for mounting it on an arbor.
Milling
It is a machine tool used to machine plane curved surfaced, slots, grooves, teeth, with fast rotating multipoint cutter
Shaper
It is a machine tool used to produce flat surfaces, which may be horizontal, vertical or inclined
Lathe
It is a machine tool used to remove metal from a work piece to give it the required shape and size
Graphite Electrode
It is a petroleum by-product used as electrodes in an electric arc furnace melting operation.
Drop forging
It is a process by which a hot plastic metal is made to flow into dies by the application of sudden blows to the material
Dressing
It is a process of cleaning the face of grinding wheel by means of a dresser for removing the glazing and loading of wheel and to improve the cutting action of a wheel.
Drifting
It is a process of enlarging and smoothening the punched hole by means of tapered drifts of various sizes and shapes
Blanking
It is a process of shearing in which sheet or plate is cut out to a definite outline in a press
Hardening
It is a process to impact maximum hardness to the steel part.
Tempering
It is a process to reduce some brittleness and to induce some toughness in the steel part
Annealing
It is a process to soft the steel part by removing the internal stress
Inertia
It is a property of matter, which causes it to resist any change in its motion or state of rest.
Shaft
It is a rotating machine member that transmits power.
Kinematics
It is a science of motion that can be solved in terms of scalar or vector algebra.
Tumbler Gear
It is a set of gears fitted in different positions on a plate, which are controlled by a lever
Sizing
It is a squeezing operation used for flattening or surfacing various parts where small amount of flow of material is involved
Cold rolling
It is a squeezing process used to finish sheet or bar stock for special purpose
Buffing
It is a surface finishing process and is used to produce a lustrous surface of attractive appearance.
f
It is a symbol ___________ that the work surfaces should be machine-finished and placed on the line that represents the surface to be machined.
Carriage bolt
It is a type of bolt threaded on both ends that can be used where a through bolt is impossible.
Slotter
It is a type of reciprocating type machine tool used for machining flat, cylindrical, and irregular surfaces.
Mandrel
It is a work holding device
Up milling
It is also known as conventional milling in which the rotation of the cutter is in a direction opposite to the direction of the table movement.
Up-milling
It is also known as conventional milling in which the rotation of the cutter is in the direction opposite to the direction of the table movement
Dividing head
It is an attachment to the milling machine, which helps to divide the job periphery into a number of equal divisions
Swaging
It is an operation in which round rod is placed between the top and bottom swages and hammered to remove the bends and marks
Heat Treatment
It is an operation involving heating and cooling of metals to change the properties
Lapping
It is an operation of finishing the flat and cylindrical surfaces to a fine degree of accuracy
Honing
It is an operation of finishing the flat and cylindrical surfaces to a fine degree of accuracy by means of abrasive sticks
Gang milling
It is an operation of milling the complex surfaces with the help of a group of cutters mounted on the same arbor
Straddle milling
It is an operation of milling two opposite sides of work piece at a time by using two side milling cutters on the same arbor
Reaming
It is an operation of sizing and finishing a hole by means of cutting tool having several cutting edges.
Peening
It is an operation of stretching or spreading over the metal by means of the plane of the hammer
Indexing
It is an operation to divide the periphery of the job into number of equal parts accurately
Form milling
It is an operation to produce irregular contours using a form cutter
Saw milling
It is an operation to produce narrow slots or grooves using a slitting saw milling cutter
Tin
It is associated with nickel steel
Key Seat
It is axially located rectangular groove in a hub and shaft.
Band brake
It is considered as the simplest type of mechanical brake.
Grease
It is considered semi-solid lubricant
Routine maintenance
It is done then and there by adjusting or repairing the faults come in notice during the work.
UNF
It is frequently used in automobile and aircraft work.
Roller bearing
It is generally used on high speed with heavy load because it has line contact
Ball bearing
It is generally used on high speed with light load because it has point contact
Quenching
It is hardening treatment whereby a cast metal is being heated to a very high temperature then suddenly subjected to rapid cooling to improve hardenability of wear resistance is called:
Quenching
It is hardening treatment whereby a cast metal is being heated to a very high temperature then suddenly subjected to rapid cooling to improve hardenability or wear resistance is called:
Over arm
It is mounted on the top of the column and is guided in perfect alignment by the machine dovetailed surfaces.
Alloy Steel
It is one in which some elements other than carbon has been added to improve change the physical properties.
Charpy test
It is one in which specimen, supported at both ends as a simple beam is broken by the impact strength of the metal
Normalizing
It is process to make the steel part to its normal range
18 to 24
It is recommended for high speed application that the minimum number of teeth in small sprocket should be:
8 times
It is recommended not to have a direct drive and drive sprockets if the raio of their teeth exceeds _______ use two or more combination
One-half
It is standard practice to assume that the thickness of the tooth measured around the pitch circle is exactly _____ of a circular pitch.
One half
It is standard practice to assume that the thickness of the tooth measured sound the pitch circle is exactly ________ the circle path.
4.5
It is suggested that the design factor on the yield strength be about 1.5 for the smooth load, about 2 to 2.25 for minor shock loads, and _________ when the loading reverse during operation.
Polishing
It is surface finishing process by which scratches and toll marks are removed with a polishing wheel.
Stiffness
It is the ability of the material of resist deformation under stress.
Side cutting edge angle
It is the angle between the side cutting edge and the longitudinal axis of the tool.
Micrometer
It is the best instrument for measuring a thousand of an inch.
Anisotropy
It is the characteristic of exhibiting different properties when tested in different directions
Alloy steel
It is the combination of iron, carbon and other alloying elements.
Radial clearance
It is the difference in the radii of the bearing and the journal
Allowance
It is the intentional difference in the sizes of mating parts
Waviness
It is the irregularities or departures from the nominal surface of greater spacing than roughness
Planer
It is the machine used for shaping of long, flat or flat contoured surfaces by reciprocating the work piece under a stationary single-point tool or tools.
Broaching
It is the machine used for shaping of metal or plastic by pushing or pulling a broaching across a surface or through an existing hole in a work piece.
Modulus of elasticity
It is the measure of stiffness
Modulus of toughness
It is the measure of the total energy-absorbed capacity of the material and includes the energy of both elastic and plastic deformation.
Centerless grinding
It is the method of grinding cylindrical surfaces.
Retarded motion
It is the motion of an object diminished/decreased speed.
Counter sinking
It is the operation of beveling the mouth of a hole
Spot facing
It is the operation of smoothing and squaring the surface around the hole
Crowning
It is the outer surface of face or rim of the pulley and made in convex form to keep the belt in center when it is in motion
Drawing out
It is the process by which the length of a work piece is increased by reducing its cross-sectional area.
Jumping
It is the process by which the length of a work piece is reduced.
Case Hardening
It is the process for making the outer surface harder of the steel parT
Angular indexing
It is the process of driving the periphery of the job in degrees.
Extrusion forging
It is the process of forging by which the metal in the plastic state is made to flow within a die by the application of plunger pressure
Peening
It is the stretching or spreading of metal by hammering
Brittleness
It is the tendency to fracture without appreciable deformation
Down time
It is the time lost due to break downs, waiting for tools, minor accident etc.
Power saw
It is used for cutting long pieces of metals.
Relieving attachment
It is used for external, internal and relieving of mill cutters and taps
Drill chuck
It is used for holding straight shank drills in the spindle of the machine when drilling.
Seal
It is used in conjunction with circular cross sectional members to retain oil and prevent dirt, foreign particles and moisture and to permit pressure differential between exterior and interior of the applied part.
Thick-walled cylinders
It is used in high-pressure cylinders.
Chromium
It is used in steels as an alloying element to combing hardness obtained
8UN
It is used on bolts for high-pressure pipe flanges, cylinder head studs etc.
Hollow punch
It is used on soft metals and non-metals for making holes
Rack Gear
It is used to change rotary motion to reciprocating motion.
Clutch
It is used to connect and disconnect the driving and driven units
Belt
It is used to connect pulleys to convey materials by transmitting motion and power
Feeler gauge
It is used to measure gap between two mating parts to set the job and machine in alignment and to measure clearance of piston and cylinder in automobiles.
Slip clutch
It is used to protect a machine in case of jamming and for overload protection of motors and engine
Brakes
It is used to stop the motion of a moving object.
Vanadium
It is used to toughen and strengthen the steel, to reduce the grain size and to act as a cleanser and degasifier.
Herring bone gear
It is used to transmit motion at high speed with heavy load without producing noise
Helical Gears
It is used to transmit motion at high speed without producing noise
Worm gear
It is used to transmit power at high velocity ratios between non-intersecting shafts that are usually but not necessarily at right angle.
Dial Indicator
It is used to true and align machine tools fixtures and works to test and inspect size trueness of finished work, and to compare measurements either heights or depths or many other measurements.
Dial indicator
It is used to true and align machine tools, fixtures and works.
Back rake angle
It measures the downward slope of the top surface of the tool from the nose to the rear along the longitudinal.
Side rake angle
It measures the slope of top surface of the tool to the side in a direction perpendicular to the longitudinal axis.
Saddle
It moves on the lathe bed with cutting tool according to the rotation of lead screw or by hand traversing wheel
Scoring
It occurs under heavy loads and in adequate lubrication.
Aluminum
It serves as an excellent deoxidizing agent and promotes the nitriding of steels
Butt welding
It used for joining members of approximately equal in cross-section
Upset welding
It used for joining members of approximately equal in cross-section
Tool steel
Jig bushing are generally made of
Resistance welding
Joining metal by means of high current at low voltage. During the passage of current, pressure by the electrodes produces a forge weld:
Tangential keys
Kennedy keys are also known as
Cast iron
Kerosine is used as coolant, while machining which material?
Roughen material
Knurling is done to
electronic industry
Laser welding is widely used in
in. per foot of length
Lateral deflection caused by bending should not exceed
Morse Taper
Lathe operator to remove the taper shank from the taper hole uses drift. It is also called:
Depth of engagement
Length of contact between two mating parts in screw and nut threads measured axially is called
1
Length-diameter ration was a good compromise for the general case of hydrodynamic bearings. It is approximately equal to
Shaper Machine
Machine shop equipment that can flatter horizontally, vertically or angular plane called:
Plain Scriber
Machine tool used for laying straight lines on metal surfaces made of sharp tool steel is called:
Sulfur, lead, phosphorus
Machining properties of steel can be improved by adding:
Tungsten
Main alloying element to H.S.S is
screw thread
Major and minor diameters are commonly used in
Copper
Major component of bronze casting is:
Hardwood
Mallets are made of ________.
Hollow work pieces
Mandrel are used to hold
Copper, manganese and nickel
Manganese is an alloy of
Shell and milling cutter
Mark the cutter which works simultaneously with the up cut and down cut process
During up cut milling with a straight tooth cutter
Mark the milling method during which the formation of chatter marks is very likely:
Iron
Material having a high electrical resistance and should not be used as conductor of electrical current.
Jigs
Measuring and other selling methods can be eliminated by using _________ and fixtures
Babbitt
Metal that assists lubrication or lubricant in itself
The electrons are loosely bound to the nuclei and therefore mobile
Metals are conductive because:
Autfrettage
Method of prestressing thick cylinders
Tool and cutter grinder
Milling cutter is sharpened on
Milling Machine Arbors
Milling machine accessories are used to hold milling cutter in the milling machine called:
Angular milling
Milling surfaces that are flat and at an angle to the axis of the spindle of the milling machine called
6. 36 mm
Minimum thickness for boiler plate shall be
1
Mirror finish has surfaces fitness of _______ rms.
a measure of a materials ability to store strain energy
Modulus of resilience is
shear stress to shear strain
Modulus of rigidity can be defined as the ratio of
principal stress, normal stress and tangential stress
Mohr's circle can be used to determine _________ on inclined surface.
None of these
Moment of inertia is also called _______
None of these
Moment of inertia is also called:
Nickel
Most effective alloying element for reducing brittleness of steel at very low temperature
Projection
Multi spot welding process is also referred as _____welding
Torch
Name of mechanism, which a welding operator holds during gas welding and at the end of which the gages are burred to perform the various gas welding operation.
Combination
Name the type of chuck commonly used for holding work piece in a lathe operation. Example 3-jaw universal chuck, 4-jaw independent chuck.
94xx
Nickel - Chromium - Molybdenum steel designation SAE ______
Light cuts
Nitriding process of surface treatment for steel tools is used for taking
Refractories
Non-metallic material of high melting temperature being used as furnace lining.
Refractories
Non-metallic materials of high melting temperature used in the construction of furnaces, crucible and so forth are called:
450 to 550°F
Normal stress relieving temperature for cast steel is:
1 to 3
Normally, cast iron contains 2% carbon or more and silicon in the range of ______%.
Stress
Obtained by dividing the differential load dF by the dA over which it acts.
Pitch point
Of meshing gears, ¬¬_____ is the point of tangency to the pitch circle.
Center-drilling
On a lathe, the dead center is used after
Precision
One important skill that operates of machine tools must have an understanding of measurements, which demands:
Grain size is too fine and Wheel is hard
One of the causes of grinding wheel glazing is
2.5 Pc < b < 4 Pc
One of the causes of spur gear tooth breakage is the unbalanced load on one end of breakage is the unbalanced load on one end of the tooth that results in the higher stress than when the load is evenly distributed. To minimize this problem, the face width "b" should not be greater that the thickness of the tooth. In the absence of test values, the following can be guide.
The kind of material to be ground, The amount of stock to be removed and The kind of finish required
One of the factors involved in the choice of a grinding wheel is
Granite
One of the material used for making surface plate is:
The surfaces to be soldered must be clean
One of the most important factors that is often overlooked when soldering is the fact that
140 F to 160 F
Operating temperature of oil film ranges _____________ or less
600-700°F
Ordinary steel begins to lose strength and elasticity significantly of about what temperature?
Gravity Casting
Ornaments are cast by:
0.70% to 1.5%
Percentage of carbon in high carbon steel is
Plasticity
Permanent deformation or strain may occur without fracture is called:
Splines
Permanent keys made integral with the shaft and fitting into key ways broached into the mating hub.
Coarse grains
Permeability, in relation to molding sands, is high for
centrifugal casting
Pipes subject to high pressure are generally made by
Centrifugal casting
Pipes subjected to high pressures are generally made by
Cast iron
Piston compression rings are made of:
Applied load
Pitting is a function of the Hertzian contact stresses between two cylinders and is proportioned to the square root of the ______.
Heavy duty
Planer type milling machine is built up for __________ work of:
Bilateral Tolerance
Plus or minus of the tolerance is also called:
Hard steels and nickel alloys and Thin sheets metal
Point angle of 135° on drills is used for:
Stages at which allotropic forms change
Points of arrest of iron correspond to:
stress-strain relationships where stresses are applied in more than one direction
Poisson's ratio is principally used in
unit lateral deformation to the unit longitudinal deformation
Poisson's ratio is the ratio of the
Thermo setting plastics
Polyesters belong to the group of:
Less
Power brakes require ______ power:
1.5D
Practical considerations required that the hub length should be at least _________ to obtain a good grip.
Hydrochloric acid
Prepared soldered paste flux is most popular but if you did not have any, you could use _____ as substitute
where the shearing stress is zero
Principal stresses occur on those planes
Wiping
Process of Connecting load pipes by soldering alloy
Hydrometallurgical Processes
Process which involve the reduction of the metal from aqueous solution by replacement or by electrolysis are called:
Linear momentum
Product of mass and linear velocity is known as:
Billets
Products that have cross sections of less than 6 inches and that are not in the finished forms
Multi spot welding process
Projection welding is
Mechanical properties
Properties which describe the behavior of the materials under the association of force are called as:
15 - 25
Range of helix angle on helical gear is _________.
Easy withdrawal
Raping allowance is provided on a pattern to take care of
Uniform
Ratchet stop is attached with micrometer to measure the accurate reading by applying _______ pressure irrespective of users skill and strength
Clockwise direction
Reamer should also be turned in _________ direction when taking it out
It is easy for machinery, It is cheaper and It has less wear and tear
Reasons why cast iron is selected for the manufacture of surface plate
59
Recommended best cutting angle of drill for work on steel or cast iron is ___________ degrees.
40-50
Recommended hardness of pinion for helical/herringbone gear tooth should be _____ BHN point to sustain life:
Laminated spring
Refers to a flat or curved made of thin superimposed plates and formin a cantilever or beam of uniform strength.
Tube
Refers to a hollow product of round or any other cross section having a continuous periphery.
Toe
Refers to a portion of the small end of the tooth.
Bolt
Refers to a screw fastening with a nut on it.
Machine bolt
Refers to an old name for an unfinished through bolt, comes with a square.
Rotary attachment
Refers to circular milling attachment that is bolted to the top of the table of a plain or universal milling machine.
Working stress
Refers to the actual stress the material has when under load.
Pitch
Refers to the axial distance from a point on one coil to the corresponding point on the next adjacent coil.
Weldability
Refers to the capacity of a metal to be joined by welding in a satisfactory manner.
Face cone
Refers to the cone that is performed by the elements of top lands
Major diameter
Refers to the diameter of the imaginary cylinder that bounds the crest of an external thread.
Arc of contact
Refers to the portion of the circumference of a grinding wheel touching the work being ground.
Under cut
Refers to the portion of the tooth surface adjacent to the involute lying inside a radial line passing through an imaginary intersection of the involute and the base circle.
Upsetting
Refers to the process of bulging on one end of a work piece to bring a required shape
Band brakes
Refers to the simplest type of brakes.
Pinion
Refers to the smallest wheel of a gear train
Coil clearance
Refers to the space between adjacent coils when the spring is compressed to its operating length
Head stock
Refers to the unit that can be moved longitudinally along the swivel table and is clamped in position by two bolts one on either side of the base.
Tempering
Reheating to a temperature below the transformation range, followed by any desired rate of cooling to attain the desired properties of the metal
8 to 12
Relief angle of a single-point cutting mild steel cast iron and another average work as recommended should be in the range of _________ degrees for high speed tools.
Roughen Material
Removing the sharp edges from a piece of stock is referred to as
Oscillating
Rocker arm is a _______ part of shaper
aluminum alloys, copper and bronze
Ropes are made of
The flow of materials in the joint
Routing prescribes
0.20%
SAE 1020 steel is a carbon steel containing ____ percent carbon
3%
SAE 2317 steel is a nickel steel alloy containing _____percent nickel
Society of Automotive Engineers
SAE means
taper thread
Screw thread projecting from a cylindrical surface is a
Lead
Select from the conductors below that has the least electrical conductivity
Silver
Select the best conductor of electricity
Lead
Select the one that has the highest specific gravity
Gear Shaving
Select the one that is gear finishing process.
Angle Iron
Select the one that is not an angle measuring device
to provide for the connection of shafts of units that are manufactured separately, to provide for misalignment of the shafts and to reduce the transmission of shock loads from one shaft to another
Shaft couplings are used in machinery for several purposes. The most common purpose of shaft coupling is
15mm
Shaper tool bit should not exceed in tool holder beyond
High speed steel
Shaper tools are made of
High speed steel
Shaper tools are made up of what type of material?
modulus of rigidity
Shear modulus is also known as:
Spindles
Short shafts on machines are called
92xx
Silicon - manganese steel designation, SAE ________.
Butting
Slightly rounding a cutting edge to reduce the probability of edge chipping is referred to as
Tin and lead
Soft solder is made of
350℉
Soft solder melts at approximately
Lead and tin
Solder is an alloy of _________
Joining two metals by a third soft metal that is applied in a molten state
Soldering is the process of
5/8 inch
Some experiments made at Cornell University showed that experience mechanic could bread a ________ bolt due to nut tightening.
Rosin
Sometimes used for soldering bright tin.
More heat
Special solders used for aluminum usually require
Front wheel
Speedometer drive is generally taken from
Small power
Spiral Gears are suitable for transmitting:
automobiles
Splined shafts are generally for
axial relative motion between shaft and hub is necessary
Splines are used when
In flow
Sprue is the passage provided for the
Setting of teeth
Staggering of hacksaw blade teeth on both sides alternatively is called
Chromium
Stainless steel is obtaining principally by the use of which of the alloying element?
have any type of motion
Statement that a given body is in static equilibrium means that the body cannot
Cold headling
Steel ball for ball bearing are manufactured by
Annealing
Steel can be strengthened by all of the following practices, EXCEPT:
Stainless steel
Steel containing large amounts of mild nickel and chromium
Killed steel
Steel that has been deoxidized with strong deoxidizing agent such as silicon or aluminum, in order to eliminate the reaction between the carbon and oxygen during
Wrought steel
Steel that has been hammered rolled or drawn in the process of electricity
Eutectoid
Steel with 0.80% carbon and 100% pearlite is known as:
Carbonitriding
Steels may be carburized and nitride simultaneously by the process known as
900 rpm
Straight and zerol bevel gears should not be sued when the pitch line velocity is greater than:
Soft
Straight fluted drill are used to drill _________ materials
ultimate strength
Strength of a material is that of a stress intensity determined by considering the maximum test load to act over the original area of the test specimens called
Quenching
Stress relieving is also _________ for the purpose of reducing the internal stress of steel material / metal.
torsional, bending and axial
Stresses in shafts are analyzed through
residual stresses
Stresses that are independent to loads are known as:
shearing stress
Structural steel elements subjected to torsion develop what kind of stress?
Calcinations
Subjecting a substance to a high temperature below the fusion point usually to make it friable.
Phosphorous
Substance that can increase the machinability of steel
Fuels
Substances having sufficient carbon and/or hydrogen for chemical oxidation to produce exothermally, worthwhile quantities of heat.
Clamping arrangement, Tool guiding elements and Manufacturing conditions
Successfully designing of jigs and fixtures depend upon
Exist at the temperature below 10K
Super conductors
32
Surface roughness on active profile surfaces on gear is about ____ pitch
Tinning two surfaces, applying flux them, holding the two together and heating
Sweating is the process of
Uniform symmetrical shape
Sweep pattern is used for molding parts having:
Tapping tap
Tap not used for cutting thread ___________.
The drill can be easily forced out of the sleeve with a drift
Tapered shanks are used on a large drill presses so that
12,000,000 psi
Tests and theoretical investigations by J.F. Howe indicate that for steel ropes of the ordinary constructions the value of modulus of elasticity is
Effective face width
That portion of the face width that actually comes into contact with mating teeth, as occasionally one member of a pair of gears may have a greater face width than the other is called:
Flank of tooth
That surface which is between the pitch circle and the bottom land is called:
Brake oil
That type of oil is used in the hydraulic brake system?
Medium
The 300 series bearing is called
Heavy
The 400 series bearing is called:
Basic Hole System
The ASA fits are based on the
1.5d
The ASME Boiler Code requires that the edge distance must be not less than
3.5
The Roebling Handbook suggests minimum design factor of guy's is
5.0
The Roebling Handbook suggests minimum design factor of miscellaneous hoisting equipment is
12.5o
The SAE recommends an angle of ________ for cone clutches faced with leather or asbestos or having cork inserts:
Three times than for steel
The Young's modulus of carbide tools is about ________.
Base circle
The _____ from which an involute tooth is generated or developed.
20o
The _____ full depth teeth have the advantages of the greater capacity and less interference trouble.
Elongation
The _____ of parallel connection of spring is always constant
Lathe
The _______ is a machine tool used to remove metal from a work piece to give it the required shape and size.
Morse
The _______ is the most common of the standard tapers.
Vertex distance
The _______ of a bevel gear is equal to the altitude of the pitch cone.
Throat
The _______ of a worm gear is the concave surface of the gear tooth.
Normal pitch
The _______ of a worm is the distance between the center of one tooth and the center of an adjacent tooth, measured perpendicular to the teeth.
Circular pitch
The ________ is equal to the tooth thickness plus the space width.
Helix angle
The _________ is the angle at which the teeth of a helical gear are slanted across the face of the gear.
Arc of approach
The _________ is the arc of the pitch circle where the tooth profile cuts the pitch circle when a pair of teeth first comes in contact until they are in contact as the pitch point.
Epitrochoid
The _________ traced by the outermost corner of one tooth on the plane of the other gear.
Bevel
The __________ gears are used for changing the plane direction
Apron
The __________ supports the table on the cross rail and moves across it from left to right.
Resilience
The ability of a material to absorb energy when deformed elastically and to return to it when unloaded is known as
Allotropy
The ability of a substance to exist in more than one lattice form is known as
Plasticity
The ability of metal to be deformed considerable without rupture is called:
Ductility
The ability of metal to stretch bend or twist without breaking or cracking is called
kinetic energy
The ability of moving body to perform work is called:
0.00025 mm
The accuracy obtained by the grinding process can be of the order of
Riding on clutch
The act keeping some pressure on the clutch pedal at the time of driving is known as:
its magnitude, direction of its action and point of application
The action of a force is characterized by
n + 2
The actual number of coil is _________ in a squared and ground ends.
Efficiency
The actual torque of a gear set divided by its gear ratio.
It can be used with highspeed drives, It can be used in dusty and abrasive environments and It allows long distances between shafts
The advantage of flat belt is that:
Inserting a feeler gage between the coupling faces at various points around the circumference
The alignment of coupling faces can be checked by
Clearance
The amount by which the dedendum exceeds the addendum of the mating tooth.
Clearance
The amount by which the dedendum in a given gear exceeds the addendum of its mating gear.
Backlash
The amount by which the width of a tooth space exceeds the thickness of the engaging tooth on the pitch circles
Modulus of Resilience
The amount of energy per unit volume which the material will possess when subjected to the elastic limit stress is called:
0.125 mm
The amount of metal removed by honing process is less than
0.125 mm
The amount of metal removed by honing process is less than __________.
Base Helix angle
The angle at the base cylinder if an involute gear, that the tooth makes with the gear axis.
Face angle
The angle between the element of the face cone and its axis equals pitch angle plus addendum angle.
Face angle
The angle between the element of the face cone and its axis.
Back angle
The angle between the plane of the pitch circle and a plane tangent to the end of the tooth.
Pressure angle
The angle between the tooth profile and radial line at its pitch point. Involute teeth the angle between the line of action and line tangent to the pitch circle.
Clearance angle
The angle formed between the clearance surface and the work surface or the tangent to the work piece at the point of contact with the tool
Wedge angle
The angle formed between the face and the clearance surface
Cutting angle
The angle formed between the face of a tool and the work surface or tangent to the work at a point of contact with the tool called
Rake angle
The angle formed the face and the normal to the work piece at the point of contact with the tool
Angle of thread
The angle included between the sides of the thread measured in an axial plane in a screw thread.
principal plane
The angle of inclination of the planes on which the principal stresses act is called
Roll angle
The angle subtended at the center of the base circle from teeth origin of an involute to the point of tangency of the generation from any point of the same involute.
Pitch angle
The angle subtended by the arc on the pitch equal in the length to the circular pitch.
Angle of approach
The angle through which the gear tirns from the time a particular pair of teeth come into in contact until they are in contact at the pitch point
Angle of action
The angle through which the gear turns from the time a given pair of teeth are in contact at the pitch point until they pass out the mesh
Angle of action
The angle through which the gear turns from the time a particular pair of teeth comes into in contact until they go out the contact.
Cone center
The apex of the pitch cone.
Cathodic protection
The application of electrical current to the corrosion circuit to counter the corrosion reaction is called:
62 HRC
The approximate hardness of HSS end mill cutter is:
Submerged arc welding
The arc is covered with a welding composition and bare electrode wire is fed automatically
Contact ratio
The arc of action to circular pitch or length of action to base pitch
Foundry Area
The area of the machine shop whose metal is being melted to form a new shape is the:
change in moment between the two points
The area of the shear diagram of a beam between any two points on the beam is equal to the
Molding
The art of making definite impressions in sand by means of a pattern for a purpose of producing a casting
1.5 to 2 psi
The average tooth stiffness constant of face is usually:
Spiral bevel gears
The axes intersect and the teeth are curved and oblique is called:
Normal base pitch
The base pitch in the normal plane.
1000 psi
The bearing load on feather keys should not exceed
Cast iron
The bed of machine tool is normally made of
sum of the moments of all external forces on one side of the section
The bending moment at a section of a beam is derived from the
Knife file
The best file to use when finishing sharp corners or slots and grooves is the
Micrometer
The best instrument for measuring thousandths of an inch is the:
4000 psi
The best leather has an ultimate strength of about
Safety precautions
The best method of avoiding accident is by observing __________ related to job, machine and work piece.
14 - 32 teeth
The blades for hacksaw have number of teeth range of:
Braking torque
The brake capacity to absorb energy is known as:
750 F to 1000 F
The brake lining operating at temperature _____, sintered mixtures containing ceramics are used:
6 ksi
The breaking strength of oak tanned belting varies from 3 to more than
Red shortness
The brittleness in steel elevated temperature is known as:
an axial load, a traverse force and a bending moment
The built-in or fixed support is capable of supporting
75%
The capacity of a crossed belt should be reduced to _____ that of an open belt
Live Center
The center that is fitted in headstock spindle called
Toughness
The characteristics of tool steel sustain shocks and major impacts is due to its:
Cast iron
The cheapest and most abundant engineering material is ________
elevators, cranes and tramways
The chief usage of wire ropes at the present time is
Broaching
The chip removal process is called
Root circle
The circle containing the bottoms of the tooth spaces is called:
Root circle
The circle containing the bottoms of the tooth spaces.
Base circle
The circle from which the involute is generated.
Dedendum circle
The circle that bounds the bottom of the teeth.
Addendum circle
The circle that bounds the outer ends of the teeth.
Normal circular pitch
The circular pitch in the normal plane.
Active length
The circumference of a coil spring times the effective number of coils is called
Wood
The clamping block to be used in a slotter to support the end of the strap is made of
Clutch bearing
The clutch finger is pushed by
0.3
The coefficient of friction between the belt and the pulley for leather belt running on steel pulley is:
depends on the materials and the finish condition of the surface
The coefficient of friction for dry surfaces
length of the column
The column splice is used for increasing
Sommerfeld Number
The combined effect of many of the variables involved in the operation of a bearing under hydrodynamic lubrication can be characterized by the dimensionless number called:
Steel rule, Vernier caliper and Micrometer
The common measuring tools are
least radius of gyration
The compression members tend to buckle in the direction of
Fillet curve
The concave portion of the tooth profile where it joins the bottom of the toot space.
Fillet curve
The concave portion of tooth profile where it joints the bottom of the tooth filler curve is called:
Stress concentration factor
The condition, which causes actual stresses in machine members to be higher than nominal values predicted by the elementary direct and combined stress equations.
Root cone
The cone formed by the elements of bottom lands
Pitch cones
The cone, which represents in bevel gears the original friction surfaces are called
Chamfer
The conical surface at the starting end of the thread is called
1.0
The contact ratio of a pair of mating spur gears must be well over ____ to insure a smooth transfer of load from one pair of teeth to the next pair.
59°
The correct cutting angle on a drill for ordinary work is
Rusting
The corrosion of iron or iron-base alloy
2.0 times
The couple diameter of the hubs of larger gears should be _____ the bore for cast iron.
major diameter
The crest diameter of a screw thread is the same as
Cycloid
The curve formed by the path of a point on a circle as it rolls a straight line.
Involute
The curve formed by the path of a point on a straight line called their generatrix, as it rolls along a convex base curve.
Trochoid
The curve formed by the path of a point on the extension of the radius of a circle as it rolls along the curve or line.
Conjugate curve
The curve that satisfy the law of gearing.
59°
The cutting angle on a drill for mild steel should be
Undercutting, Necking and Grooving
The cutting of groove nest to a shoulder on a piece of work
25-40 m/min
The cutting speed of HSS twist drill to machine gray cast iron is
180-240 m/min
The cutting speeds of HSS milling cutter to machine aluminum is
Planer
The cutting tool used the shaper are similar to turning tools _______ machine.
Less
The darft allowance on metallic pattern as compared to wooden ones is:
strain
The deformation that results from a stress and is expressed in terms of the amount of deformation per inch.
stress concentration factor
The degree of stress concentration is usually indicated by the
Ductility
The degree to which a material will deform before ultimate fracture
0.42 lb/in3
The density of a balata belt is:
Dedendum
The depth of tooth space below the pitch circle
Dedendum
The depth of tooth space below the pitch circle or the radial dimension between the pitch circle and the bottom of the tooth space.
3
The design stress based upon the ultimate strength of the material with a factor of safety of about _____.
7 wires
The designation 6 by 7 indicates the rope is made of six strands each containing
Lubrication
The desired between two surfaces having relatively sliding motion is known
Quietness, Durability and Strength
The desired quality in gear is
D=2.5d to 3d
The diameter (D) of a plain milling cutter is approximately related to arbor diameter (d) as
Internal diameter
The diameter of a circle coinciding with the top of the teeth of an internal gear
Internal diameter
The diameter of a circle coinciding with the top of the teeth of an internal gear.
Internal diameter
The diameter of a circle coinciding with the top of the teeth on an internal gear.
equal to the diameter of bolt
The diameter of a washer is generally
1/4
The diameter of the large end of the pin should be ________ the shaft diameter.
Normal diametral pitch
The diametral pitch circulated in the normal plane and is equal to the pitch dived by the cosine of the helix angle
Tolerance
The difference between the high limit and the low limit of a size is called
stress raiser
The discontinuity or change of section, such as scratches, holes, bends, or grooves is a
Lead
The distance a helical gear or worm would thread along its axis in one revolution if it free to move axially is called:
Pitch
The distance between similar equally spaced tooth surfaces in a given direction and along a given curve or line.
Circular pitch
The distance between similar sides of adjacent teeth measured on the pitch line is called:
Depth of thread
The distance between the crest and the brace of the thread, measured perpendicular to the axis.
Normal circular pitch
The distance between the teeth measured on the pitch surface along a normal to the helix
Circular Pitch
The distance from the center of one tooth of a gear to the center next consecutive tooth measured on the pitch.
Chordal thickness
The distance in a straight line from one side of a tooth to the side at points where the pitch circle passes through the tooth.
Lead
The distance of a helical gear or worm would thread along its axis in one revolution if it were to move axially is called:
Lead
The distance of a helical gear or worm would thread along its axis one revolution of it was free to move axially.
Whole depth
The distance of the tooth, which is equal to the sum of the addendum and dedendum is known as:
Length of action
The distance on involute line of action through which the point of contact moves during the action of the tooth profile.
Glazing
The dulling of the cutting particles of a grinding wheel resulting in a decreased rate of cutting is called.
To increase strength and ductility if added up to 10-30 %
The effect of alloying zinc to copper is
About 90 percent
The efficiency of hydraulic braking system is:
one third that of a prismatic bar of the same length
The elongation of a conical bar under its own weight is equal to
It accommodates the handle and a wedge for preventing it
The eye hole of a hammer head is made in an oval shape and taper towards center because
higher value
The factor of safety generally applied in wire rope design starts at 3-4 for standing rope application, 5-12 for operating rope and __________ for hazard to life and properly application like foundry operation.
The end of return stroke
The feed in shaper takes place at
Vise
The five principal parts of the shaper are the table, tool slide, base, ram and _______.
By using a straight edge, By using a surface plate and By using a dial test indicator
The flatness of surface can be checked
Aluminum, Channel and Tubing
The flexible type hacksaw blade is best suited to work on
Stag
The flux and gauge when in proper proportions will have a melting temperatures considerably lower than that of ethane and the resulting combination is called:
Acid fluxes
The flux that should be provided in soldering electrical connection or commutator wires as it tends to corrode the connections.
Acid fluxes
The flux that should be provided in soldering electrical connection or commutator wires as its tends to corrode the connectors called
Borax
The flux usually used for hard solder is
cylindrical cam
The follower reciprocates or oscillates in a plane parallel to the axis of rotation.
Clutches
The friction devices used to connect shafts:
Normal Force
The frictional forces depend on coefficient of friction and:
Evans Friction Cones
The frustums of two cones used in a manner to permit a variation of velocity ratio between two parallel shafts are called:
Complete the unusual stroke
The function of a flywheel is to
Manganese, Silicon and Aluminum
The good deoxidizer in steel melting.
Should be easy to handle, Should be easy to read and Should be wear resistance
The good quality of a measuring tool
Hardness of bond
The grade is of grinding wheel depends upon:
Corrosion
The gradual chemical reaction by other substance such that the metal is converted to an oxide or other compounds
bearing strength
The greatest unit pressure the soil can continuously withstand.
Flute
The groove providing for the cutting faces of the threads or teeth, chip passage and lubrication.
The teeth pointing forward
The hacksaw blade should be placed in the frame with
210 and 300 Brinell
The hardness of a helical and herringbone teeth cut after heat treatment will generally fall between the limits of ______.
340 - 350 normal
The hardness of helical and herringbone gear teeth after heat treatment is 210 to 300 Brinell Hardness, for gear and pinion is at:
Martensite
The hardness of steel increase if it contains ___________
Chordal addendum
The height from the top of the tooth to the chord subtending the circular thickness arc.
Helix angle
The helical angle that a helical gear tooth makes the gear axis.
24-32°
The helix angle on a high speed steel twist drill for drilling cast iron is the order of:
20 to 30
The helix angles for the herringbone gears are used from ______for industrial gears.
ultimate strength
The highest ordinate in the stress - strain diagram or curve is called
Laying Out
The hop term used to include the marking of inscribing of center points circles area of straight lines upon metal surfaces, either curve or flat, for the guidance of the worker called:
Dislocation
The imperfection in the crystal structure is metal is known as:
60°
The included angle of a dead center is
stress
The internal resistance a material offers to being deformed and is measured in terms of applied load.
Not relieved when the weld is penned
The internal stresses existing in a welded connection are
Pitch circle
The intersection between the axes of the line of centers and the common tangent to the base circles,
Hard
The jaw of a standard vise is
In V form
The jaws of a long vice are opened
Key way
The key fits into mating grooves in the shaft and mating member is called
Pitting
The kind of a wear occurs because of a fatigue failure of the surfaces material as a result of high contact stresses is known as:
Silicon sheet steel
The laminations are made from
elastic limit
The last point at which a material may be stretched a still return to its underformed condition upon release of the stress.
Angle cutting, Grooving and Facing
The lathe compound is used for
in the gear ratio
The lay shaft moves ________ the primary shaft.
Point to heel
The length of a file is measured from
Clearance
The length of a shaper stroke is the length of the job plus _________.
Circle Thickness
The length of arc between the two sides of a gear tooth on the pitch circle.
1.5D
The length of contact in a tapped hole should be a minimum of about ___________ for cast iron.
Circular pitch
The length of the arc of the pitch circle between the centers or other corresponding points of the adjacent teeth.
Chordal thickness
The length of the chord subtended by the circular arc is called:
Less than
The length of the hub should not be made ____ the face width of the gear.
Face width
The length of the teeth in axial plane.
0.25 to 1.0
The length ratio L/D typically varies between
Line of centers
The line that passes through centers of the bearing and the journal is called the
elastic range
The linear portion of the stress-strain diagram of steel is known as
Elastic range
The linear portion of the stress-strain diagram of steel is known as the :
5
The machine foundation must have a factor of safety of
Rockwell Test
The machine used for testing of very thin steel or surface layers
The table of a planer has a reciprocating motion past the total head while the table of the shaper is stationary and the tool head has a reciprocating motion
The main difference between a planer and a shaper
parallel to
The main shaft is lifted ________ the lay shaft.
10.60 o 0.70%
The majority of coils springs are made of coil tempered carbon steel wire containing ______________ carbon.
Contact stress
The maximum compressive stress within the contact area between mating gear tooth profiles is called:
The carbon content
The maximum hardenability of any steel depends on __________
6 mm
The maximum size of the fillet weld that can be made in single pass is
ultimate stress
The maximum stress to which a material may be subjected before failure occurs.
Elastic limit
The maximum stress to which a standardized test specimen may be subjected without permanent deformation.
3440 C
The maximum temperature developed for oxy-acetylene welding is
1965 C
The maximum temperature developed for oxy-hydrogen welding is
Fillet stress
The maximum tensile stress in the gear tooth fillet.
Coupling
The mechanical fastening that connects shafts together for power transmission.
One dressing
The mechanical treatment by which the concentration of ores is increased are called:
Piercing
The method of cold working by compression.
7
The minimum factor of safety of small hoist is
21
The minimum number of teeth on the smaller sprocket for high speeds is:
12
The minimum number of teeth on the smaller sprocket for low speeds is:
17
The minimum number of teeth on the smaller sprocket for moderate speeds is:
2 in
The minimum recommended worm pitch diameter is ¼ in and the maximum is:
tension
The modulus of elasticity for most metals in compression is usually taken as that in
28 to 31
The modulus of elasticity for ordinary steel usually falls between ________ million pounds per square inch.
Modulus of rigidity
The modulus of elasticity in shear is commonly called
Stiffness
The modulus of plasticity is a measure of
defined as the unit shear stress divided by the unit shear deformation
The modulus of rigidity of a steel member is
Carbon
The most important element that controls the physical properties of steel is:
12°
The most practical spring designs produce a pitch angle is less than
Copper
The mould for casting ferrous materials
Copper
The mould for casting ferrous materials in continuous melting process is made of:
Creep
The movement of belt upon the face of rim or outer of the driver and driven pulleys within the area of arc of contact is called
Creep
The movement of belt upon the face of rim or outer surface of the driver and driven pulleys within the area of arc of contact.
Spinning on lathe
The non chip removal process is called
Copper, Bronze and Brass
The non ferrous alloy corrodes in ammonia is
Gear ratio
The number of teeth in the gear divided by the number of teeth in the opinion.
Diametral Pitch
The number of teeth per inch of pitch diameter and which gives some indications of the size of the gear teeth
Quenching
The operation of cooling a heated piece of work rapidly by dipping it in water, brine or oil.
Boring
The operation of enlarging a hole by means of an adjustable cutting tool with only one cutting edge.
Boring
The operation of enlarging a hole is called:
Reaming
The operation of finishing a drilled hole to the correct size is known as
Squaring
The operation of machining the end of a work piece to make the end square with the axis.
Counter Sinking
The operation of making a cone-shaped enlargement of the end of a hole, as for a recess for a flat head screw.
Counter sinking
The operation of making a cone-shaped enlargement of the end of a hole, as for a recess for a flattened screw.
Chamfering
The operation of producing a beveled edge at a specified angle of the end of a turned diameter.
Dressing
The operation of truing a grinding wheel is known as
Fuel, Heat and Oxygen
The outbreak of fire can be avoided by preventing
1.8 times
The outside diameter of the hubs of larger gears should be _____ the bore for steel.
Throat diameter
The outside diameter of the worm gear measured on the central plane.
Throat diameter
The outside diameter of the worm measured on the central plane.
Solid length
The overall length of the spring when it is compressed until all adjacent coils touched.
Cannot be lubricated
The overrunning clutch
Transmits cranking force to the engine flywheel, Is one way clutch and Prevents the engine flywheel from driving the starting motor
The overrunning clutch:
Adz block
The part of a machine for wood planning that carries the cutters.
Journal
The part of a shaft or crank which is supported by and turns in bearing.
Pressure plate
The part of an automobile disc clutch that presses against the flywheel is referred to as:
75% up
The part of the total frictional energy that is stored in the brake parts, principally in the drum or disk has been estimated at __________.
Flush welding
The parts are brought together lightly with current flowing and then separated slightly
Spot welding
The parts are lapped and held in place under pressure
Line of action
The path of contact in involute gears, it is straight line passing through the pitch point and the tangent to the base circles.
Line of Action
The path of contact involute gears where the force/power is actually transmitted, it is a straight imaginary line passing through the pitch point and tangent to the base circle is known as _____.
1.7
The permissible crushing stress is about _________ times the permissible shear stress.
Stainless steel
The phenomenon of weld decay takes place in
Crown gear
The pitch angle is 90 degrees that is, the pitch has become a plane
Principal reference plane
The pitch plane, axial plane and transverse plane, all intersect at a point and mutually perpendicular to the:
the point of cam pitch circle that has the maximum pressure angle
The pitch point on a cam refers to
Less front and side clearance
The planer tool differs from lathe tool because it has
Hot Working
The plastic deformation at temperatures above the recrystallization temperature.
Cold Working
The plastic deformation at temperatures below the recrystallization temperature.
Dedendum
The portion of a gear tooth space that is cut below the pitch circle and is equal to the addendum plus the clearance
Addendum
The portion of a gear tooth that projects above or outside the pitch circle
Line of action
The portion of the common tangent to the base circles along which contact between mating involutes occurs.
Under cut
The portion of the tooth surface adjacent to the involute lying inside a radial line passing through an imaginary intersection of an involute and the base circle
crank shaft
The power obtained by piston reaches flywheel through the
120 o
The practical length of shoe is limited to about:
reverse
The primary and lay shafts rotate in _________ direction.
High speed steel
The principal materials used in high production metal working tools
Wheel cylinder
The principal parts of a hydraulic brake system are the master cylinder and the:
Injection molding
The process commonly used over thermo-plastic materials is:
Soldering
The process of bonding two or more pieces of metal together by means of another metal whose melting point is below 800⁰F
Knurling
The process of checking or producing checkers on the surface of a piece by rolling checkered depression into the surface called
Knurling
The process of checking the surface of a piece by rolling depressions into the surface.
Tapping
The process of cutting internal threads by means of a cutting tool.
Rolling
The process of forming metals by the use of dies after the metal is heated to its plastic range.
Hardening
The process of heating a piece of steel to a temperature within or above critical range and cooling rapidly.
Brazing
The process of joining metal parts by means of a non ferrous fitter or alloy that melts at a temperature above 800⁰F.
Welding
The process of joining metals by means by heating to a temperature above the recrystallization temperature or to fusion with or without the application or pressure
Resistance welding
The process of joining metals in which the two parts are joined by heating them electrically to a temperature above the recrystallization temperature.
Forging
The process of working metals by the application of sudden blows or by a steady pressured called:
Flame Hardening
The process producing a hard surface in a steel having a sufficiently high carbon content to respond in hardening by cooling of the surface.
Projected area
The product of length and diameter of the bearing is called:
Linear impulse
The product of the resultant of all forces acting on a body and the time that the resultant acts.
poisson's ratio
The property of a material that relates the lateral strain to longitudinal strain is called:
Hardness
The property of steel which resist indention of penetration is called
Ductility
The property that characterizes a material ability to be drawn into a wire is known as:
Ductility
The property that characterizes the material's ability to be drawn into a wire is called:
Softer
The purpose of annealing is to make a metal
Ensure directional solidification
The purpose of chaplets is to:
Less brittle
The purpose of tempering is to make the metal
Give desired direction of movement to the lathe carriage
The purpose of tumbler gears in lathe is to:
Increase fluidity of solder material
The purpose of using flux in soldering is to
Return
The quick return mechanism is slotter is provided in order to save the time in ________ stroke.
Eccentricity
The radial distance between the center of the bearing and the displaced center of the journal is called.
Working depth
The radial distance from the addendum circle to the working depth circle.
maximum at inner surface and decreases toward outer surface
The radial pressure and hoop tension for a thick cylinder is
modulus of elasticity
The radial pressure between the cylinders at the surface of contact depends on the ___________ of the materials.
Controls the chip formation
The rake angle of a cutting tool.
Inversely as cube of load
The rated life of a bearing changes
3/4
The ratio of average shear stress to maximum shear stress for a circular section is equal to
1*
The ratio of bulk modulus for Poisson's ratio of 0.25 will be equal to
Spring index
The ratio of mean diameter of coil to the coil diameter
Section modulus
The ratio of moment and stress is called:
Module
The ratio of pitch diameter in millimeters to the number of teeth.
slenderness ratio
The ratio of the length of the column and the radius of gyration of the cross-sectional area about a centroidal axis is called
Efficiency of the jont
The ratio of the load that will produce the allowable stress in any part of the joint to the load that will produce the allowable tension stress in the unpunched plate.
measure of distance
The ratio of the moment of inertia of the cross-section of a beam to the section modulus is
Diametral pitch
The ratio of the number of teeth to the number of millimeters of pitch diameter.
Diametral Pitch
The ratio of the number of teeth to the number of mm of pitch diameter equals number of gear teeth to each mm pitch diameter
reserve strength
The ratio of the strength of all the inside wires to the strength of all the wires in the rope
Young modulus
The ratio of the tensile stress to the tensile strain is called
Factor of safety
The ratio of the ultimate stress to the allowable stress.
bulk modulus
The ratio of the volume stress to the volume strain is called the coefficient of volume elasticity or
poisson's ratio
The ratio of unit lateral deformation to unit longitudinal deformation is called:
Spring index
The ration of the mean diameter of the spring to the wire diameter is called
Back plate being loose or bent, Brake shoe being loose or bent and Brake drum could be defective
The reason for noise at the time of engaging brake:
Module
The reciprocal of a diametrical pitch or the ratio of pitch diameter to number of teeth is called:
0.05 o 0.10
The recommended coefficient of fluctuation of flywheels for punching, shearing, and pressing machine is
71 lb/in of width
The recommended initial tension of belt is:
Petroleum Oil
The recommended lubricant for the chain drive operation is:
13.75 lb/ply per inch of width
The recommended net belt pill for rubber belt is:
35°
The recommended value of rake angle for machine aluminum with cutting tools made up of high speed steel tool.
15°
The recommended value of the rake angle for machining aluminum with cutting tools made up of cemented carbide tool
resolution of forces
The resultant of two or more forces is a
0.0010
The rule of thumb in journal bearing design, the clearance ratio/clearance should be
The edge with the handle
The safe edge of a file is
4890 kg per sq. cm
The safe soil bearing pressure of diesel engine is about
1.75 to 2.0
The service factor for heavy shock is:
1
The service factor of a gear may be taken as ____ _is an electric motor drives a centrifugal blower
1.75 -2.00
The service factor of heavy shock, rolling mill and rock crushes.
Involute
The shape of the curve on the side of gear is termed as:
Nominal size
The size by which it is referred to as a matter of convenience called
Basic size
The size in relation to which all limits of variation is made.
Shank
The size of a drill is stamped on the
10 to 50 microns
The size of abrasive grains in an abrasive jet machining varies from
Width
The size of the bench vise is measured from the ______ of its jaws
Percentage reduction of the area
The smallest area at a point of rupture of a tensile specimen divided by the original area is called:
Annealing
The softening of metal by heat treatment and most commonly consist of heating the metal up to near motion state and then cooling it very slowly
Free length
The solid length plus the clearance plus the maximum deflection.
Width
The space between the adjacent teeth is called:
Tooth space
The space between the teeth measured along the pitch circle.
1000 fpm
The spiral bevel gears are recommended when the pitch line speed exceeds:
8 to 10
The spring index for general industrial uses should be
45° only
The square head of a combination set is used for marking or checking the engine.
20 degrees
The standard pressure angle for fine pitch gears is ______ gears and is recommended for most applications
3:2
The standard ratio of cutting in return stroke in shaper is
tie rod
The steering is coupled to the two front wheels by means of a
262 N/mm^2
The strength of iron rivets in single shear
303 N/mm^2
The strength of steel rivets in single shear
Circular thickness
The strength of the arc between the two sides of a gear tooth on the pitch circles unless otherwise specified.
less than
The strength of the rope is always ____________ the sum of the strength of wires
elastic limit
The stress beyond which the material will not return to its original shape when unloaded, but will retain a permanent deformation is termed as
root
The stress concentration is maximum at - _________ in a standard coarse thread.
Initial stress
The stress or load induced by the tightening operation.
Design stress
The stress value, which is used, in the mathematical determination of the required size of the machine member.
Ram
The stroke positioning lever is located on the _________ of shaper.
Pearlite
The structure formed when transformation occurs at temperaute down to the knee of the curve
An emulsion of oil and water
The studs used as a coolant in general machine stop consist of
An emulsion of oil and water
The studs used as a coolant machine shop consists of
Nose
The surface below over which the chip flows.
Flank
The surface below the cutting edge
Bottom land
The surface between the flanks of adjacent teeth.
Flank
The surface connecting the cast and roots of the screw thread.
500 or greater rms
The surface finish of heavy cuts and coarse feed
1
The surface finish of micrometer anvils in ______ rms.
Bottom land
The surface of the gear between the fillets of adjacent teeth is called:
Bottom land
The surface of the gear between the fillets of adjacent teeth.
Flank
The surface of the tooth between the pitch and root cylinders.
Face
The surface of the tooth between the pitch cylinder and the addendum cylinder.
Longitudinal, Cross and Rotary
The table of the slotter has feeding movements
Fits into the handle
The tang of a file is the part that
Melting point
The temperature above which the alloy is liquid and will run is known as ______
2500 fpm
The tension in the belt due to centrifugal force increases rapidly above
5
The tension ratio of V-belt is:
3
The tension ratio of flat belt is:
Loading
The term ________ means that particle of metal are adhering to the cutting faces of the grinding wheel.
Stamping
The term used for most press operations
Basic profile of thread
The theoretical profile of the thread for a length of one pitch in the axial plane on which design forms of both the external threads are based.
the same
The theory of mechanics of materials shows that the results from the octahedral shear stress theory and those from the maximum distortion energy theory are ________.
8/7
The thickness should be multiplied by _________ to obtain the nominal wall thickness.
1.5
The threaded length is about _________ times the diameters.
File card
The tool used for cleaning files is called
Reamer
The tool used in precision work to smooth on enlarge holes is called a
Ring gage
The tool used to check external pipe threads is called a
Gear hob
The tool used to check internal pipe threads is called
Plug gage
The tool used to check internal pipe threads is called
Pipe stock
The tool used to cut threads on pipe is called a
Gear grinding
The tooth life is affected to the maximum extent by
root
The top and bottom-land for gears is similar formed as to crest and ________ for screw thread.
Top land
The top surface of the tooth.
elongation
The total amount of permanent extension of the gage length measured after specimen has fractured and is expressed as percentage increase of the original length.
strain
The total deformation measured in the direction of the line of stress.
N(N-1)/2
The total number of instantaneous center for a mechanism of N links is equal to
Tolerance
The total permissible variation in the size of a dimension the difference between the limits of the size.
stress
The total resistance that a material offers to an applied load is called
stress
The total resistance that a material offers to an applied load.
resilience
The total strain energy stored in a body is called
differential
The transmission system incorporates clutch, gear box, and propeller shaft and
Three
The triangular scraper has _______ sharp cutting edges
Reduce the axial pressure
The twist drill has its point thinned in order to
90°
The two keys are angularly spaced
Load on the bearing
The type and number of bearing to be used for spindles of machine tool depend on
Load on the bearing
The type and number of bearings to be used for spindles of machine tool depend on the
15 deg to 25 deg
The typical helix angle ranges from _____ to _____
240 and 280 ksi
The ultimate strength of improved Plow Steel is in the range of
more
The ultimate tensile stress of mild steel, as compared to its ultimate compressive stress will be
strain
The unit deformation is called
More torque
The use of gearbox provides:
0.001 mm
The value of one micron is
3-20 V
The voltage applied between tool (cathode) and work piece (anode) in ECM process is
Tooth thickness
The width of tooth measured along the pitch circle.
Cold working
The yield strength of the rectangular yellow brass 65 tp 70% Cu, 30 to 35% Zn can be increased / improved by _____.
More than one
There are ______ plates in a multi-plate clutch
Compound indexing
There are two different movements of the crank in:
single piece and built up
There are two types of crankshafts, namely
Spur gears
They are cylindrical in form operate on parallel axes and have straight teeth parallel to the axis.
Carbon steel
They are usually steel or steel casting
1.2√t
Thicker plates usually require excessive rivet sizes and for practical reasons the rivet diameter is made approximately
900 psi
To avoid excessive wear rate the recommended limiting pressure for 6 x 19 rope is ________ for cast steel.
12 teeth
To estimate fouling, let the minimum differences in tooth numbers between the internal gear and pinion be _____ for 14.5 deg involute depth
5
To obtain safe working pressure the critical pressure, should be at least ______ times the working pressure.
Any of the above, depending on type and use
Tool steel can be hardened by
Heating red hot and plunging into a water, Heating red hot and cooling in a blast of dry air and Heating red hot and plunging into line seed or cotton seed oil
Tool steel can be hardened by
Chordal Thickness
Tooth width measure along the chord at the pitch circle is known as:
Chordal Thickness
Tooth width measurement along the chord at the pitch circle
Crest
Top surface joining two sides of thread in screw is known as
0.08 to 1
Torsional deflection is a significant consideration in the design of shaft and the limit should be in the range of ________ degrees/foot of length.
1 degree
Torsional deformation in transmission shafts should be limited to _______ in 20 diameters.
πd^3/4
Treating the weld as a line, the amount or inertia about center of gravity of a circular weld or diameter d would b
Shallow quenching
Treatment process that produces a residual compressive stress at the surface and residual tension on the inside that results in considerable increase in fatigue strength for members on torsion / bending is known as:
Forging
Trimming is a process associated with:
Red hardness
Tungsten in high speed imparts which of the following characteristics?
Five times their diameter
Twist drills are made usually considered suitable machining holes having a length less than
Five times their diameter
Twist drills are usually considered suitable for machining holes having a length less than
Limits
Two extreme permissible sizes of a dimension
Time allowed to complete the job
Two major factors, which determine the rpm of milling cutter, are the material being cut and _________.
resultant
Two or more forces acting together, could be replaced by a single force with same effect in a mass called:
Quarter turn
Two shafts at right angles to each other may be connected by the _____ arrangement
Carriage bolt
Type of bolt intended for use in bolting wooden parts together or wood to metal. It has a short portion of shank just underneath a round head, which is designed to keep the bolt from turning in the wood when the nut is tightened.
Servo brake
Type of brake under the category of power brake is known as:
Mechanical brake
Type of brakes that are capable of stopping the motion of a machine member as well as retarding its motion
Collet Attachment
Type of chuck wherein the work piece with standard diameter or size could be attached fast and quick specially small size work of mass production called:
Oak Tanned
Type of leather belt being applied with waterproof cement is called:
1.25D and 2.4D
Typical hub length falls between _________ where D is the shaft diameter
0.30 to 0.33
Typical values for Poisson's ratio of aluminum and titanium is in the range of
0.25 to 0.27
Typical values for Poisson's ratio of cast iron is in the range of
0.27 to 0.30
Typical values for Poisson's ratio of steel is in the range of
Hypotenuse
Under sine principle the length of sine bar takes the place of
yield stress / factor of safety
Under theories of failure for static loading of ductile material, the design stress is the
half
Under theories of failure, the value of shear stress is ______ that of tensile stress.
Creep
Under very low deformation and at high temperature it is possible to have some plastic flow in a crystal at a shear stress lower than the critical shear stress. What is this phenomenon called?
Repeated load
Under which type of loading does fatigue occur?
Soldering
Uniting two pieces of metal by means of a different metal which is applied between the two in molten state
Control of pressure and current
Unlike materials or materials of different thickness can be butt welded by
4 mm
Up to what thickness of plate, edger preparation for welding is not needed?
Shear pins
Used as couplings, or in addition to overload, where there is danger of injury to machines or to material in process.
Involute serrations
Used for permanent fits and are similar to involute splines except that the pressure angle is 14.5 deg.
Trammel
Used for scribing large radius of circles and arcs
4500 fpm
V-belts operate efficiently at speed of about:
Iron
Valves and piping in an ammonia system are made of
Bevel
Vertex distance is a term used in ____ gearing
Nearing the shank
Web is a part of drill and is usually thicker __________.
¼ in.
Weld metal impact specimen shall be taken across the weld with one face substantially parallel to and within
Welding defect
Weld spatter refers to
MIG welding
Welding defect called arc blow occurs in
7000 fpm
Well proportion commercial gears with a pitch line velocity of less than _____ will normally not score if they have a reasonably good surface finish and are properly lubricated.
Flat key and Square key
What are considered as the most common keys?
Drill will become overheated and will drawn from steel
What happens to a drill if the operating speed is too fast?
Annealing
What heat treatment process can cast steel materials of high chrome high manganese etc. be subjected for the purpose machining process?
SAE 4xxx
What is the SAE specification number of molybdenum?
0.035 lb/in3
What is the density of a leather belt?
0.045 lb/in3
What is the density of flat belt rubber material?
Brass is composed of copper and zinc while bronze is composed of copper and tin
What is the difference between brass and bronze?
The tool of the shaper moves while the plane is stationary
What is the difference between the shaper and the planer?
To control the chip formation
What is the function of rake angle of a cutting tool?
To keep the speed fluctuation within the desired limits, To limit the momentary rise or fall in speed during sudden changes of load and To keep the angular advance or retardation within prescribed limit as compared with a perfectly uniform angular speed
What is the function of the flywheel?
Aluminum
What is the lightest known metal?
12 - 15°
What is the lip clearance angle of twist drill for generated work?
High carbon steel, High speed steel and Low tungsten steel
What is the material of hacksaw blade?
Slip of the clutch, Clutch does not disengage properly and Clutch creates noise
What is the most common defect of clutch?
Tensile strength
What is the property of a material which resists forces acting to pull the material apart?
It has a low melting point.
What is the reason why lead is used in solders?
It is cheap
What is the reason why lead is used in solders?
200/250
What is the recommended cutting speed range for bronze in fpm?
31d
What is the recommended sheave diameter for extra-flexible hoisting rope?
72d
What is the recommended sheave diameter for haulage rope?
45d
What is the recommended sheave diameter for standard hoisting rope?
16 ft, 20 ft and 24 ft
What is the standard stock length?
10
What is the usual factor of safety used with leather belts?
Flexible coupling
What is used for absorbing some shock and vibration that may appear on one shaft and of preventing the occurrence of reversed stresses caused by the shaft deflecting at the coupling?
Zinc plates
What is used in main condenser to control electrolysis?
Universal coupling
What is used to connect the shafts whose axes are intersecting
3 mm
What should be the maximum size of the fillet weld?
0°
What should be the top rake angle to cut brass?
Side clearance
What supports for free feeding
Front Clearance
What supports the top rake?
Saw and Chisel
What tool will be used in making wood pattern in the foundry shop?
Full bearing
What type of bearing which totally encloses the shaft?
Helical
What type of gear is used for high-speed operation?
Bevel Gear
What type of gear, which can transmit power at a certain angle?
None of these
What type of leather belting should be used at an ambient temperature above 149 deg F and possible acid liquid coming in contact with the belt?
Gas welding
What type of welding that the hot flame and a metal rod are used?
Jamming, Overheating and Overload
What will be the effect in bushing gears without backlash?
Spur Friction Wheels
Wheels are sometimes used for the transmission of high power when an approximately constant velocity ratio is desired is called:
Slower
When a lathe is put into back gear, it will go
Grains become equal-axed
When a metal is cold worked, all of the following generally occur, EXCEPT:
compressive stress
When a part is constrained to move and heated, it develops what kind of stress?
Unity
When a spring is made of ductile material, the curvature factor would be
velocity is constant
When acceleration is zero, the
Resonance
When an excitation frequency coincides with a natural frequency, this is known to be:
Same direction
When an external gear is meshed with an internal gear the gears will rotate in
Drill being ground improperly, Drill being too hot and Insufficient lubrication
When cutting a drill , it will squeal due to
Turn the blade at right angles to the frame
When cutting a long thing piece of metal
Less side rake
When cutting material in a lathe, the harder the material being cut, the tool bit should have
Less top rake
When cutting material in a lathe, the softer the material being cut, the tool bit should have
When it is not properly heat treated
When does a chisel get blunt
Tailstock and drill chuck
When drilling a hole in a piece of work held in a lathe chuck one would use the
At the center
When facing off a piece of material in the lathe chuck the bit must be set
Be out of round and Have small flat areas on the surfaces
When filling a piece of metal in a lathe if short quick strokes are used the finished piece will probably
More than
When hard material is to be drilled, the cutting angle of the drill should be _____ 118°
500F
When heat treated wire is coiled cold, it should be stress relieved for bending stresses after cooling by being heated at some at what temperature
Hypocycloid
When it rolls along the inner side of another circle, it is called:
Epicycloid
When it rolls along the outer side another circle, is called:
Magnetic chuck
When large number of components are turned and parted off a bar the chuck generally used is the ¬¬_____.
Speed is too fast
When lathe tool bit burns, it means that the
Margins
When measuring a drill for size, measure across the
Gear Rack
When meshed with a gear, it is used to change rotary motion to reciprocating motion is:
On lathe mandrel
When outside diameter of a job is turned in relation to the internal hole, the job should be held
minimum or maximum
When shear force is zero along a section, the bending moment at that section will be
Remove and prevent oxidation of the metals
When soldering, flux is used for
approximately the same
When tested in compression, ductile materials usually exhibit ________characteristics up to the yield strength as they do when tested in tension
Too much rake angle and Too high a speed
When the extreme outer corners of the cutting edges of a drill wear away too rapidly, it is an indication of
Interference of metal
When the hole is smaller than the shaft, it will take a force or pressure to put the cold part together. The allowance is said to be negative and is termed as:
Negative allowance
When the hole is smaller than the shaft, it will take pressure to put the parts together. The allowance is said to be negative and is termed
1.7
When the key is not fitted on all four sides experience has shown that, the permissible crushing stress is about ____________ times the permissible shear stress.
Centrally loaded
When the line of action of the load bisects the arc of partial bearing it is said to be:
dowel pins
When the location of bolt is such that it would normally be shear, it is better practice to use a
5
When the longitudinal seams are of lap riveted construction the minimum factor of safety is
Hunting
When the number of teeth in a pair of meshing gears are such that they do not have a common divisor.
Miter gear
When the pair of bevel gears of the same size is on shafts intersecting at right angle, they are called _____
Ground after hardening
When the pitch line speed is above 800 fpm the teeth should be:
671.55 N/mm^2
When the tensile strength of steel shell plates is not known it shall be taken as
Compound screw
When the threads are of opposite hand, the driven screw moves rapidly is known as
Brake winding
When the vehicle runs brake drum becomes hot because of friction of the shoe. This fault is known as _______
constant
When the velocity is changing, the acceleration is
Small-diameter cutting
When turning a piece of round metal in a lathe, the front clearance should be smaller for
Slip
When two or more tools are to be used through the same hole then __________ bushes are used in jigs
Fretting
When two touching surface have a high contact pressure and when these surfaces have minute relative motion a phenomenon called
A vise or clamp
When using a drill press the work should be held with
A vise clamp
When using a drill press, the work should be held with
Random loading
When varying loads are applied that are not regular in their amplitude, the loading is called
After each double stroke
Where does the feed motion takes place in a slotting machine
On the flank
Where does the relieved cutters are reground
Silicate
Which bond is suitable for wet grinding
Pipe center
Which center is used for supporting open end of pipes, shells etc. while turning or thread cutting in a lathe
Band clutch
Which clutch is suitable for mine hoists and other services where heavy loads are accompanied by severe shock?
Butt joint
Which diamond riveted joint can be adopted?
Forging
Which do not belong to foundry or metal casting shop?
SEA
Which does not belong to the group?
Thread plug gauge
Which gauge is used to check the internal threads
Herringbone gears
Which gears are used to connect parallel shafts lying in the same plane?
None of the above
Which key normally used in wristwatches?
Front angle
Which of the following angles equal the pitch angle?
It is a machine tool
Which of the following best describe a milling machine?
it is the stress at which the material plastically strains 0.2%.
Which of the following best describes the 0.2% offset yield stress?
Too much longitudinal feed
Which of the following conditions may cause error during knurling
Gold
Which of the following contact point metals has highest melting point
Boron
Which of the following does not affect the tensile strength of steel?
Toughing
Which of the following does not belong to the group?
Sulfur
Which of the following elements when large quantity is harmful to the ferrous metal?
Cupola furnace, Crucible furnace and Electric furnace
Which of the following furnace is used for manufacture of cast iron
Metallic and Asbestos
Which of the following gasket materials should be used on a Freon system?
Miter gears
Which of the following gears that are of the same and transmit motion at right angles?
Chromium
Which of the following gives greater hardness, cutting toughness and fine grain structure?
Vanadium
Which of the following gives greater hardness, cutting toughness and resistance to wear and tear?
Prick punch
Which of the following has its angle 30° and is used for giving impression on soft metals?
Dot punch
Which of the following has its angle 60° and is used for dotting after marking the lines on general works?
Center punch
Which of the following has its angle 90° and is used to give deep marks to the location of drill
Cobalt
Which of the following improves red hardness?
Size, shape and Type of teeth
Which of the following information is necessary when ordering a file
To transmit power
Which of the following is NOT a function of bearings
Boring mill
Which of the following is a boring machine tool used particularly for large work piece, types are horizontal and vertical?
Pig iron
Which of the following is a product of blast furnace
Shock absorbers
Which of the following is also used in the suspension system?
Sulfurite
Which of the following is not a classification of an iron ore?
Sulfurite
Which of the following is not a classification of iron core?
Fluted
Which of the following is not a common drill shank
Bound
Which of the following is not a common term relating to the classification of fits?
Lead iron
Which of the following is not a kind of cast iron?
Contraction
Which of the following is not a kind of mandrel?
Chemical analysis
Which of the following is not a method of non-destructive testing of steel castings and forging?
Silver zinc
Which of the following is not a primary cess?
Mirror
Which of the following is not a sound absorptive material
Tool and die
Which of the following is not a structural class of steel?
Measure the thickness
Which of the following is not a use of spring?
Fan
Which of the following is not part of a lathe machine?
Scale
Which of the following is not part of combination set?
Anvil
Which of the following is not part of the headstock?
Steam bath
Which of the following is not used to temper steel?
Graphite
Which of the following is the best conductor of electricity?
40 m/min
Which of the following is the cutting speed of brass?
Acceleration
Which of the following is the rate at which the velocity is changing?
Puncher slotter
Which of the following is used for all general purposes?
Chamois leather or linen cloth
Which of the following is used in cleaning the gage blocks before and after use
Gib-head keys
Which of the following keys that is square or flat and tapered with head?
AISI 3240
Which of the following material is used for shafting?
Low carbon steel
Which of the following materials is unsuitable as a bearing?
AISI 4063
Which of the following materials is used for leaf and coil spring?
Carbon steel, Platinum cobalt and Alnico
Which of the following materials is used for making permanent magnets?
Manganese steel
Which of the following metal is non-magnetic?
Aluminum and Magnesium
Which of the following metals can be suitably welded by TIG welding?
Bronze
Which of the following metals gets deposited to provide an undercut for chromium?
Aluminum
Which of the following metals has the highest specific heat capacity at 100 C?
Nickel
Which of the following metals increases the strength without sacrificing the ductility of the carbon steels?
Medium carbon steel
Which of the following metals will respond to heat treatment?
Water Jet Machining
Which of the following processes that hydraulic fluid acts as transfer media.
Whitworth mechanism
Which of the following quick return mechanisms is most widely used in most of the slotters
Nickel
Which of the following raises the tensile strength, protects from corrosion and improves wearing property?
Front clearance
Which of the following reduces the rubbing action?
Over Hauling
Which of the following services is not considered to be a work of a machinist?
Counter shaft, Jack shaft and Head Shaft
Which of the following shaft intermediate between a line shaft and a driven shaft?
Clutch slips quickly, It occupies more space and Adjustment has to be done early
Which of the following shortcoming in the cone clutch because of which the clutch is not used?
Mulberry
Which of the following timber is used for sports goods?
Double VEE block
Which of the following tools does not belong to the group?
Rigid coupling
Which of the following type of coupling is used with collinear shafts?
Close fit, Press and Sliding
Which of the following type of fits used for involute spline?
UNEF
Which of the following type of threads are useful in aeronautical equipments?
UNC
Which of the following type of threads recommended for general use?
Shoe rivets
Which of the following types of brakes are also changed while replacing brake lining?
Asbestos or Metallic
Which of the following types of packing would be used on steam points?
6 by 37
Which of the ropes will be most flexible?
Diamond
Which one is the hardness material?
There is no such phenomenon like true stress or true strain.
Which one is the incorrect statement about true stress-strain method?
Screw
Which one that has no nut and turns into a threaded hole?
Electroplating
Which onwe is different from the group?
Tang
Which part of the file is not hardened
Feeler Gage
Which tool does not belong to the group?
Coupling bolt
Which type of bolt that finished all over, usually having coarse threads?
Bush roller
Which type of chain is used in motorcycle?
Miter gear
Which type of gear has a ratio of 1:1?
Spur gear
Which type of gear is a cylinder, wheel or disk on the surface of which is cut parallel teeth?
Static load
Which type of load that is applied slowly and is never removed?
It assists for quick melting and increasing the fluidity of solder, It saves the part from oxidation and It takes the molten metal on all surfaces
While soldering the flux is used because
Clutch release bearings is either dry or defective, Clutch spring is broken and Clutch is faulty
Why does a clutch create noise?
Coarse pitched blade is used on hard metal, Too much speed and pressure and Pressure is not released in return stroke
Why hacksaw blade teeth get dull?
Connecting load pipes by soldering alloy
Wiping is the process of
strands
Wire ropes are made from cold-drawn wires that are first wrapped into
Herringbone gears
Zero axial thrust is experienced in:
17 teeth
Zerol bevel gears angle should have a pinion either not less than:
Hunting tooth
____ is the extra tooth in gear, which is used to distribute the wear more evenly.
Worm gear
____ is used to transmit power between non-intersecting shafts, nearly always at right angle to each other
¬¬ Rack
_____ gear with teeth spaced along a straight and suitable for straight line motion.
Annular gear
_____ is a gear that has teeth cut on the inside of the rim instead of on the outside
Bevel Gear
_____ is a kind of gear used to transmit motion from one shaft to another shaft at angle to the first
Bend
_____ is a test for pipe used for coiling in sizes 2 inches.
Straight bevel gear
_____ is one whose tooth profiles consists of straight elements that converge to a point at the cone center.
Face contact ratio
_____ is the advance of the tooth in the face width divided by circular pitch.
Bevel gear
_____ is used to connect intersecting shafts, usually but not necessarily at 90 degrees
Planer
_____ used in the production of flat surfaces on pieces too large or too heavy to hold in a shaper.
Shaper
_____ used to machine flat or curved surfaces with a tool, which moves in a reciprocating motion.
Angular gears
______ are bevel gears mounted on intersecting shafts at angle other than 90 degrees.
Zerol bevel gears
______ have curved teeth as in spiral bevels, but with zero angle.
Spiral bevel gear
______ is a gear that has an advantage of smoother tooth engagement quietness of operation greater and higher permissible speeds.
Abrasion
______ is caused by foreign matter such as grit or metal particles or by a failure of the oil film at low speed
Crown Gear
______ is one in which angle is 90 degrees that is the pitch cone has become a plane
Bevel Gears
______ is used to transmit power between shafts axis of which it intersect
Gears
_______ are machine elements that transmit motion by means of successively engaging teeth.
Herringbone Gear
_______ commonly used in a parallel shaft transmission especially when a smooth continuous action is essential as in high speed drives up to 12,000 fpm.
Spalling
_______ is a surface fatigue of greater extent than pitting that is the flakes are much larger. This type of failure occurs in surface-hardened teeth.
Base Helix Angle
_______ is the angle at the base cylinder of an involute gear that the tooth maxes with the gear axis
Distortion energy theory
_________ provides a very accurate prediction of failure of ductile materials under static loads or completely reversed normal, shear or combined stresses.
Cobalt
__________ improves the cutting quality and gives excellent magnetic property in the steel
Compound rest
__________ is a lathe carriage part the bridge across the bed to carry the cross slide and tool rest.
Working depth
__________ is equal to twice the addendum.
Tolerance
__________ is the difference between the high and low limit of size
Anvil
__________ no part of the headstock.
Molybdenum
___________ gives greater hardness and resistance to forging and drawing
Strain Hardening
_____________ means the increasing hardness and strength by plastic deformation at temperatures lower than crystallization range?
Hardness
______________ means the resistance to penetration
Reamer
a side cutting tool used for accurately finishing the straight or tapered holes already drilled or bored
Cavity is filled with a pre
calculated quantity of metal and core or plunger inserted to force the metal into cavity- In Carthias process
Hoop stress
circumferential tensile stress
load on the beam
different of the shear equation
form
for cutting gear teeth in a shaper, the _________ tool is use
40:1
in a standard dividing head the ration between the worm wheel and the worm is
Long slow stroke
the best procedure when filling a piece of metal in a lathe is to take _________
sunk key
the key is cut in both shaft and hub
spring rate
the relationship between the force exerted by a spring and its deflection is called
operating length
the shortest length for the spring during normal operation
side milling cutters
the straddle milling is done by means of two:
Stronger than
A brazed joint is ___ soldered joint.
Bottom tap
A tap with a chamfer 1-1½ threads in length
30
Anchor bolts should be embedded in concrete at least ___________ times the bolt diameter.
low carbon steel
Commercial shafting is made of
Top half of molding
Cope foundry practice refers to
Stamping
Gears for watches are generally manufactured by:
Cam
In the mechanical brake system, the main function is of:
Silicon
Killed steel is always associated with:
Ceramics
Materials having a high percentage of alumina or steatite are known as
Without a handle
Never use a file
The capacity to hold moisture
Permeability of foundry sand is:
Shaper
Quick return mechanism is used in a
Flutes
Taps are re-sharpened by grinding
Np
The free length of ground ends is
Smelting
The process of extracting iron in a blast is called
Cutting from the of work piece
Under cutting is:
Miter Gear
A bevel gear of the same size mounted on a shaft at 90 degrees is called:
Homogenous
A body having identical properties all over is called:
cylindrical cam
A cam where the follower reciprocates or oscillates in a plane parallel to the axis of the cam is called:
higher pair
A cam with a roller follower would constitute which type of pair?
6 x 19 IWRC
A rope used for general-purpose.
Top steel
A scriber is made from
Tool steel
A scriber is made from what steel?
Tool steel
A scriber is made of
Machining
A section in a machine shop operation is called:
lower pair
A shaft revolving in a bearing forms a
owards left side of bearing and making metal to metal contact
A shaft rotating in anticlockwise direction at slow speed inside a bearing will be
Clutch
A shaft that is used to connect or disconnect at will is called:
Scriber
A sharp pointed steel tool used to scribe lines on metal being laid out.
The temperature of equilibrium between solid silver and liquid silver at normal atmospheric pressure.
A silver refers to
parabola
A simply supported beam has a uniformly distributed load on it, the bending moment is
Angle gage
A sine bar cannot be used without a/an
three turning and one sliding pair
A slider crank chain is made up of
Slotter
A _________ is reciprocating type tool used for machining flat, cylindrical and irregular surfaces.
Plug
A __________ gage is used to check the size of hole/bore
Stub tooth
A __________ is one thicker in proportion to its length than the involute tooth.
Allowance
An intentional difference between the hole and the shaft dimension for any type of fit is called
90°
Angle of center punch is
Closed grain cast iron
Angle plate is made of
Cutting gears in a shaper
Angle plate is used for
Muriatic acid
Another name for hydrochloric acid is
Fastener
Any device to connect or joint more components.
Spheroidizing
Any heating and cooling of steel that produces a rounded or glocular form of carbide.
Copper
Commutator segments are made of
force
Could be defined as simply push and pull is known as
A fine spray of metal
During MIG welding the metal is transferred in the form of
Below their recrystallization temperature
During cold working metals are worked
88%
If the ends are joined by wire lacing with machine, the usual efficiency of joint is:
Square bearing
If the length over diameter of the bearing is unity, it is also known as
Drill socket
If the taper shank of the drill is too large as compared to the spindle hole, the __________ is used.
-+0.010
If there is no fit, a liberal tolerance of the order _______ in machining work could be permitted.
2
If two intersecting shafts are to be belt connected, how many guide pulley/s is used?
uniaxial
If two principal stresses are zero, the state stress is
Annealing the cutting edge of the bit
If you use a dry grinding wheel for sharpening tool bits, dip the end of the bit in water frequently to prevent
Slotting Attachment
Imparts of reciprocating motion to a single point cutting tool called
Arsenic and boron
What are the most commonly used materials as photo cathode for the photoelectric emission?
Shell and integral
What are the two types of construction for the worm?
Bearing and journal
What bearing composed of two principal parts, namely the
Kinetic energy
What energy is stored in flywheels?
Depth of cut
What factors can modify the recommended cutting speed of known work piece?
Brakes do not work properly, Brakes do not disengage and Brake make noise
What faults develop in the brakes?
The job will be out of round
What happens if the job is loosely fitted between centers in cylindrical grindings?
All of these
What is the common shop practice to prevent solder from running away from surface to be joined?
18% Chromium and 8% Nickel
18-8" stainless steel means:
Tachometer
Device used to measure accurately speed called:
Natural abrasive
Energy is a/an
universal coupling
Used for non-collinear shafts
Cam
A plate, cylinder or other solid with a surface of contact so designed as to caused or modify the motion of the piece.
Accelerated
Cam in general maybe divided into two classes; uniform motion and _________ motion cam.
Creep
Continuous stretching under load even if the stress is less than the yield point is called
whitworth-quick-return mechanism
Coriolis component of acceleration is found in
inversely proportional to the modulus of elasticity and moment of inertia
Defection of a beam is
yield strength
Endurance strength is nearly proportional to the ultimate strength but not with
composition of forces
Finding the resultant of two or more forces is called:
6
Hart mechanism has how many links?
Shearing stress
Internal stress exerted by the fibers to resist the action of outside force is called:
Kinematics
It deals only with the motion of bodies without reference to the forces that cause them.
Machine
It is a device that changes the magnitude, direction or mode of application of a torque or force while transmitting it for a particular purpose.
couple
It is opposite direction of parallel force.
two elements that allow relative motion
Kinematics pairs are those pairs that have
acceleration of various parts
Klein's construction is used to determine the
torsional strength
Metal characteristic to withstand forces that causes twisting
8
Peaucellier mechanism has how many links?
lateral strain to longitudinal strain
Poisson's ratio is the ratio of
tensile strength
Property of a material, which resists forces acting to pull the material apart
Both gearing mechanism
Select the one that is the highest pair.
concurrent forces
Separate forces, which can be so combined are called:
utilizes a quadrilateral similar to the diagram of mechanism for reciprocating engine
The Klein's method of construction for reciprocating engine mechanism
torsional strength
The ability of a metal to withstand forces that causes a member to twist.
compressive strength
The ability of material or metal to resist being crushed is
compressive stress
The ability of metal to resist being crushed is called
shear strength
The ability of metal to withstand forces thus following a number of twist.
strength
The ability of metal to withstand loads without breaking down is termed as
strain
The change in length per unit original length
strains
The changes in shape or geometry of the body due to action of a force on it is called deformation or
Centripetal acc.
The direction of the ________ is toward the center of the circle in which, the study moves.
Radial cam
The follower reciprocates or oscillates in a plane perpendicular to the axis of rotation of the cam.
normal of force
The frictional forces depends on coefficient of friction and
endurance strength
The maximum stress induced in a material when subjected to alternating or repeated loading without causing failure.
Endurance limit
The maximum stress induced in a material when subjected to intermittent or repeated load without causing failure is called:
ultimate strength
The maximum stress to which a material may be subjected before failure occurs is called:
tensile strength
The maximum stress, which is reached during a tension test is called
4
The number of links in a pantograph is equal to
equilibrium is maintained
The system of forces and opposite collinear forces are added,
two pairs and two pairs sliding
In elliptical trammels,
it must have two components of acceleration e.g., centripetal and tangentia
If a particle of a link has a velocity that changes both in magnitude and direction at any instant, then
Uniform motion
If the velocity of mass is the same all the time during which motion takes place is called:
