Millwright Level 1
When angles are laid out with a bevel protractor, the accuracy attainable is:
+/- 0.5 degrees (30mins)
Vernier micrometer scale level of accuracy is:
0.0001"
Vernier micrometers are designed to measures distances to what accuracy?
0.0001"
Regular micrometer scale level of accuracy is:
0.001"
Precision layout with a vernier height gauge is accurate to:
0.001" or 0.02MM
For brazing, what fit up produces highest strength ratings?
0.001-0.005"
What feed rate is used for finishing?
0.002-0.005 inches per revolution
The cutting action of a hand broach is performed by a series of successive teeth, each protruding:
0.003" further that the preceding tooth
The major diameter of a thread is shown on a drawing as 0.748 +/- 0.002. What is the tolerance on the major diameter?
0.004
How much material should leave for reaming?
0.005"
What is the taper per foot for an arbor?
0.006-0.008" per foot
How much material should you leave for finishing?
0.030"
An infeed of 0.050 on a direct reading cross-slide results in a diameter reduction of:
0.050
You have to choose between 4 steel rods to cut 1/2-13 UNC 2A thread with an adjustable split die. What diameter rod would you use?
0.497"
What is the taper per foot for a jacobs taper?
0.591-0.979" per foot
What is the construction of a micrometer?
1. Anvil 2. Spindle 3. Sleeve 4. Thimble 5. Ratchet 6. Lock nut 7. Frame
What are 2 types of cleaning?
1. Chemical 2. Mechanical
What are the 4 CSA ratings for ladders and application?
1. Extra heavy duty (industrial construction) 2. Heavy duty (building maintenance) 3. Medium duty (light commercial) 4. Light duty (household)
What are the 2 angles of orthographic drawings?
1. First angle (Europe) 2. Third (North America)
6 colours ranging from lowest strength to highest strength for power load are:
1. Grey 2. Brown 3. Green 4. Yellow 5. Red 6. Purple
What are the 2 types of pictorial drawings?
1. Orthographic 2. Oblique
What are 3 types of technical drawings?
1. Orthographic 2. Pictorial 3. Schematic
What 3 things does a GFCI protect:
1. Overload 2. Overcurrent 3. Ground fault protection
What are the 3 types of tolerances?
1. Unilateral 2. Bilateral 3. Direct
As a general rule, the maximum depth of cut for an endmill is equal to:
1/2 the diameter of the endmill
With a low velocity tool, what is a general rule of thumb for the placement and depth of fasteners in steel?
1/2" from the edge, 2" apart and 1/4" deep
Flanges should at least be:
1/3 the diameter of the wheel
What is the amount of taper on taper pins?
1/4" per foot
What is the taper per foot of a tapered dowel pin?
1/4" per foot
On a pedestal grinder, the gap between the grinding wheel and work rest should not exceed:
1/8 inch
What is the taper per foot of a tapered gib head key?
1/8" per foot
A general-purpose drill bit for drilling most metals has an included point angle of:
118 degrees
What is the minimum safe distance from which an electric arc should be seen with the naked eye?
12M (40ft)
At what dB level would most people start feeling pain in there ears?
140 dB
What is the maximum safe working pressure for acetylene?
15 PSI
What pitch of a hacksaw blade is for general shop use?
18-pitch
A follower rest has:
2 adjustable jaws
When tapping a hole with a pipe tap, how many threads of the nipple should be able to turn into the hole before the use of a wrench becomes necessary?
2-3 threads
What is the tap drill size for a 3/4-10 UNC 2B?
21/32"
How much does propane expand when changed into gas?
270 times its volume
At what PSI is acetylene considered at its critical point?
28 PSI
What kind of threads do Acme threads have?
29 degree angle and the root and crests are flat
The thread angle from an American National Acme Thread is:
29 degress
An ISO metric thread is designated by M14 x 2 - 6g. What is the pitch of this thread?
2MM
The unified thread class that offers the tightest fit is:
3
What is the taper per foot used on milling machine spindles?
3 1/2" per foot
How many teeth should be in contact with material when using a hack saw?
3 teeth
With a low velocity tool, what is a general rule of thumb for the placement and depth of fasteners in concrete?
3" from the edge and from each other
What taper do pipe taps have?
3/4inch per foot
Isometric has __ angle:
30 degree
How long should you wait if a power actuated tool misfires?
30 seconds
The compound rest may be rotated:
360 degrees
A standard micrometer screw has what number of threads per inch?
40 TPI
What angle would the point angle of a cold chisel be ground to when splitting nuts?
40-50 degrees
Oblique has __ angle:
45 degree
Is 46 or 60 the coarser grit?
46
What is the ratio of height to distance from the foot of a ladder to the support structure?
4:1 or 75.5 degrees L/4=S
What is the level of accuracy for a universal bevel protractor?
5 minutes of a degree
How many minutes are in a degree?
60 minutes
What are the drill point included angles for soft, general and hard material?
60-90 degrees for soft, 118 degrees for general and 150 degrees for hard material
Which type of rod is best suite for high carbon steel in overhead postion?
7018
How fast should a 1/2" drill turn when drilling mild steel if the cutting speed is 90 sfpm?
720 RPM
What percentage does a tap drill leave for making threads?
75 percent
The lip relief (clearance) angle of a drill should be:
8-12 degrees
A temporary fall arrest system anchor point must have what minimum capacity to resist a fall?
800 LBS
The included point angle of a countersunk hole for most flathead screws is:
82 degrees
What is the maximum sound intensity (dB) a worker can be exposed to during an 8 hour shift before hearing protection should be worn?
85 dB
The included angle that should be ground of the point of a center punch is:
90 degrees
In oxyacetylene, how pure is oxygen?
99.5% pure oxygen
What is limestone?
A flux that is added when forging steel to remove impurities
What is a scarf joint?
A mix of a butt and lap joint
The apron handwheel moves the carriage by means of:
A rack and pinion
What are the 2 styles of ladders?
Access and working
Carburizing flames are rich in:
Acetylene
What gas is most efficient for welding purposes?
Acetylene
What is amalgamation?
Action/process or result of combining/uniting
What are the differences between acute an chronic toxic effects?
Acute is short term exposure but in high concentrations and chronic is long term exposure but in low concentrations
What is affected when drill bit tapers get damaged?
Alignment and locking capability
What is flashback?
Almost the same as backfire. Cause by grossly unequal pressures. One gas may go back into another line and create an explosive mixture
What are the 2 most commonly used abrasive materials?
Aluminum oxide and silicone carbide
What does API stand for
American Petroleum Institue
How is feed rate controlled on a horizontal band saw?
An adjustable hydraulic cylinder
The difference between a screw and a bolt is the:
Application
What speed should a countersink and counterbore be set at?
Approximately 1/4 of what you would use for a drill
How are metric tapers designated?
As a ratio 1:25
The designation that identifies a nut is:
B
What are 2 dial reading styles?
Balanced and continuous
Markings for the wheel identification can be found on the _______
Blotter
Where should you place the weld when you are welding band saw blades?
Bottom of a tooth gullet
What are 3 types of dial indicators?
Bottom plunger, test indicators and back plunger
To determine the sustainability of a base material, use a fastener as a centre punch struck by a single average hammer blow. If the material cracks or shatters, do not fasten because the material is too:
Brittle
What increases as hardness of a metal increases?
Brittleness
What part requires replacement most often in a low velocity tool?
Buffer
What does C mean in AISI manufacturing process of steel?
C= Basic open hearth carbon steel
What is the draw limit for acetylene?
Can't be emptied faster than 1/7th of its capacity per hour
What type of chisel would be used to cut a narrow square shaped groove in a piece of mild steel?
Cape chisel
What is maraging steel?
Carbon is considered an impurity. Made up of nickel, cobalt and molybdenum
What type of electrode is used in the CAC-A process
Carbon-graphite
Anything over 1.7% of carbon is considered:
Cast iron
What is tracking as it relates to band saw?
Centering the blade on the pulleys
The ________ is the amount of metal removed by each tooth per revolution
Chip load
Hand reamers must be rotated:
Clockwise
What characteristics does propane have?
Colourless, odourless and non-toxic
What are the properties of oxygen?
Colourless, odourless and tasteless as well as supports combustion
What is a vernier scale?
Compares 2 sets of graduations to magnify the accuracy of the measuerment
What are dial bore gauges?
Comparison measurement tool
A standard screwdriver blade maintains a better grip in the slot if the blade is ground slightly:
Concave
What controls the feed rate on a milling machine?
Controlled by gearbox found in knee. Levers are picked for speed or can be picked with a dial for lighter milling
Why are thread forming screws used?
Convenient in sheet metal assemblies
The finish on a thread can be enhanced by using:
Coolant
Chips left on the ways are a concern because:
Coolant on chips can cause rusting
What is the primary purpose of the secondary gas in plasma arc cutting?
Cools the torch
Plasma cutting nozzles are normally made of what material?
Copper
Power loads should not be carried loosely in pockets or aprons. Why?
Could be set off causing serious injury or death
Why should you store end mills separate from one another?
Cutting edges could chip and wear
What is a taper gauge used for ?
Determining the width of a slot or diameter of a hole and amount of angular misalignment
What is the correct tool to turn a die?
Die stock
What kind of tool is a taper gauge?
Direct reading tool
When using a sensitive drill press, what should you do as the drill breaks through the workpiece?
Ease up on the pressure
What is straight polarity and what does it effect?
Electrode negative (EN) work positive. Burns hotter, faster welding speed, wide metal flow, shallow penetration and hard to control when position welding
What is reverse polarity and what does it effect?
Electrode positive (EP) work negative. Cooler burning, slower weld speed, narrow metal flow, deeper penetration and better control when position welding
When installing a taper shank drill into the spindle bore, you must take several precautions. What are they and why?
Ensure taper and bore are clean, wipe with a rag without scraping/marking internal taper, any burrs are removed or it'll throw the bit off center
OH&S states that operators of explosive actuate tools should always wear:
Eye protection
What is the difference between fall arrest and fall restraint?
Fall arrest stops someones free fall and fall restraint stops someone from reaching a fall hazard
A GFCI prevents all electrical shocks
False
Cemented carbides are sharpened on aluminum oxide wheels
False
Is it safe to carry a portable grinder by the power cord?
False
Is it safe to use standard sockets with electric impact wrenches
False
Small drills require a higher feed per revolution than larger ones.
False
Cotter pins can be reused
False. Cotter pins are a one time use
The pitch diameter of a thread is measured exactly halfway between the major and minor diameters
False. Its APPROXIMATELY halfway between the major and minor diameter
Only steel with a carbon content of .10 and higher percent can be hardened
False. Only steel with a carbon content of 0.20 percent and higher can be hardened
Determine the feed rate if a milling machine spindle has a speed of 200rpm and the cutter has 6 cutting edges with a chip load of 0.003"
Feed= Chip Load x Spindle Speed x # of Teeth 0.003 x 200 x 6 = 3.6
What is conventional milling?
Feeds against the rotation of the cutter and tends to lift the workpiece
What is climb milling?
Feeds into the rotation of the cutter and bites into the material pushing it down and into the table
Austenite is:
Ferrite but heated to red hot
Copper sulphate layout solution should be used on:
Ferrous metals
What is brazing?
Filler metal is spread through capillary attraction
How is a Woodruff key sized?
First 2 numbers are multiplied by 1/32" and second set of numbers are multiplied by 1/8"
What is a hissing or squealing sound emitting from a cutting torch a sign of?
Flashback
Direct current (DC) is:
Flows 1 way and either has a positive or negative value
What is a worker responsible for?
For own safety Wear proper PPE Not remove any safeties Have proper instruction of a piece of equipment Use tools properly
What is braze welding?
Form of gas welding, filler metal is built up on surface
What would be best suited for your protection if you are required to work with electric power in a damp/wet space
GFCI
If you are cleaning parts in a typical solvent tank, which of the following would provide the best protection for your eyes?
Goggles
What classification of ladders may be used for construction purposes?
Grade 3
On a general purpose ISO metric thread, what character in the designation indicates a medium tolerance grade?
Grade 6
The grade of surface plate which would be used in the shop is the:
Grade B
Higher voltage on a battery means:
Greater power of tool
What is the advantage of using a bimetal blade in a band saw?
Greater wear and heat resistance, faster cutting and better durability
What are the four classes of fire? (Colour, letter and shape)
Green Triangle (A) = Ordinary combustibles Red Square (B) = Vapours Blue Circle (C) = Electrical Yellow Star (D) = Combustible metals
To determine the sustainability of a base material, use a fastener as a centre punch struck by a single average hammer blow. If the fastener is blunted ( meaning it can't fasten) the material is too:
Hard
What are the removable serrated jaws on a bench vise made from?
Hardened steel
A high pitch blade number is generally used for:
Harder and thinner material
What is an Intrimik?
Has 3 contact points rather than 2 making it self centering
What does the fire triangle consist of?
Heat, fuel and oxygen
Is propane heavier or lighter than air?
Heavier
Describe the characteristics of a bimetal power hacksaw blade
High speed tooth edge with a tough alloy steel back
What are cap screws made of?
High tensile steel
Cutting speed refers to:
How fast the workpiece travels past the tool
Which abbreviations is used to express the feed rate on a drill press?
IPR
Barrel finishing:
IS a quick and inexpensive cleaning method
When using a puller or press and removing a bearing from a shaft what should you do?
Inspect and clean shaft area
Alkaline cleaning must only be used on what metal?
Iron
Pearlite is:
Iron and carbon
Cementite is:
Iron and carbon where iron is dominant
Why is pressurized air NOT a good method of removing metal chips from hard to reach places on a milling machine?
It can get jammed under the ways or caught in the spindle taper. They can also cause burns/infections
What are the limitations of a horizontal band saw as it relates to cutting curves or round corners?
It can only cut straight
How often should an explosive actuated tool be cleaned under normal working conditions?
It should be cleaned daily or when it becomes sluggish
What is ageing in terms of cast iron?
Its a stress relieving process
Any machined surfaces on a drill press that could rust must be:
Kept clean and oiled
How does the blade set differ from the blade kerf?
Kerf is the width the blade cuts and set is the way individual teeth are bent out of line with the body
What are the types of hazardous energy?
Kinetic, chemical, potential, thermal, electrical and radiation
What scribe has the highest degree of accuracy?
Knife edge
What determines the size (capacity) of a power hacksaw?
Largest square piece that can be cut
If a milling machine is shit down for repair:
Lock out the main breaker box
When changing back-gears on a lathe:
Lock out the power supply
What is backfire?
Makes a bang/pop sound. cause by grossly unequal pressures and little gas flow
Fasteners used in explosive actuated tools are:
Manufactured from special steel and tempered
If a tool is found to be defective, you should:
Mark it defective and call a service representative
What is base material?
Material which the fastener shank is driven into
What characteristics differentiate styles of band saw blades?
Material, width, gauge, pitch, type of tooth
The size of a lathe is determined by:
Maximum distance between the centres and the amount of swing
What is amperage responsible for?
Metal deposition rate and penetration
A threaded knurled pin is designed for what material
Mild steel
What type of taper is used in the tailstock?
Morse taper
What are 2 types of tapered thread form?
NPT and NPTF
What type of flame is used to fusion weld low carbon steel?
Neutral
When tightening a bolt with a wrench:
Never push: always pull
What is the recommended speed to run a grinding wheel?
Never run it faster that the max RPM of the grinding wheel
Should an explosive actuated tool be used in explosive or flammable area?
No
IS it necessary to turn a horizontal band saw off manually after completing a cutting operation? Why or Why not?
No because a switch is automatically activated by the downward motion of the upper frame
Is it safe to run an impact wrench with a universal joint and socket attached
No because it may throw off attachments
How much oil should be added to the tool parts after cleaning?
None
What is full annealing?
Opposite of hardening
Flame temperature changes with the addition of:
Oxygen
Oxidizing flames are right in:
Oxygen
What best describes a "confined space"?
Partially/totally enclosed space not designed for human occupancy with a limited access
Cutting speed refers to:
Peripheral speed
A drive pin is a fastener used to:
Permanently attach one material to another
Thread comparison gauges use __________ as a basis for thread size
Pitch diameter
When cutting short pieces to length, what can be done to ensure that the jaws of the clamping device make good contact and do not distort
Placing a similar piece in the back
Which vise is the most rigid vise for a milling machine? Why?
Plain vise because the swivel and universal vise hold the work to high
What is a poor example of housekeeping?
Poor lighting
Alternating current (AC) is:
Positive and negative values that flow in 1 direction for the first half of the cycle and then flows in reverse in the next half of the cyle
What type of power load must be used in the low velocity tool? Why?
Power load with a crimped end must be used cause high power load would get lodged in the tool
What is the Workers' Compensation Act?
Provincial legislation to protect workers
Ferrite is:
Pure iron
When grinding HSS, you must remember to:
Quench often
You are machining a 4.5 inch diameter steel shaft with a carbide tool. To machine it at 290 surface feet per minute, what should the approximate rpm of the spindle be?
RPM = (CS x 4)/ D (290 x 4)/4.5= 257.7777 or 255
How does the speed and feed of a reamer compare to a drill?
RPM is slower and feed is faster
What does a dial caliper use to move its pointer around the face of a dial
Rack and pinion
Martensite is:
Rapid cooling of austenite
What method provides most accurate measurement when it comes to a micrometer?
Ratchet method because it releases at the same pressure every time
What is another name for a power saw?
Reciprocating saw
Before using a gauge block, you should take which of the following actions?
Remove the rust preventative compound
What is the purpose of truing a grinding wheel?
Restores the shape of the wheel and makes the outer surface of the wheel concentric with its bore
What is required for every work platform?
Safe access
What is another name for Hand Pads or Rolls?
Scotch-Brite pads
What is the highest safe standing level on a step ladder?
Second form the top
What is the purpose of a GFCI?
Senses drop in current and switches power off
Where is the datum line on a micrometer?
Sleeve
To determine the sustainability of a base material, use a fastener as a centre punch struck by a single average hammer blow. If the fastener penetrates easily, do not fasten because the material is too:
Soft
Which type of machine tap pushes the hip out ahead of the tap?
Spiral pint (gun) tap
What are 2 types of dividers?
Spring joint and firm joint
How should you start a grinder?
Stand off to the side and wait a full minute
What is voltage responsible for?
Starting and maintaining arc, puddle fluidity, and flow
What is Voltage responsible for in arc welding?
Starting arc
What is the main purpose of stop blocks?
Stop the workpiece from shifting under load
How is the speed of a power hacksaw expressed?
Strokes per minute
A rope grab in horizontal life line can cause what kind of hazard?
Swing rope harzard
A revolving centre is installed in the:
Tailstock
The tailstock is in position on the ways of the lathe with the:
Tailstock clamp
Once you have set a taper attachment to a desired angle, what important step must you follow?
Take a trial cut and measure the taper
The 3 hand taps found in a set are the:
Taper, plug and bottoming
What is different about the scale of a depth micrometer from a regular micrometer?
The distance measured is covered by the thimble
What draws the arbor or collet chuck into the spindle of the milling machine?
The draw bolt
What is a negative result of using a tool post grinder on a lathe?
The dust can destroy the ways
If the blade jumps and shudders when you are using a horizontal band saw, what could be the problem?
The feed rate is too high
The pitch of a thread cut on a lathe is controlled y:
The lead screw
Who is responsible if an accident occurs as a result of an unattended explosive actuated tool?
The operator
What makes a universal horizontal milling machine different from a plain horizontal milling machine
The table can be swivelled
The manual oil pump on the carriage pumps oil to:
The ways
Cutting a taper with a compound rest has what major disadvantage?
There is no power feed
What re the saw guides and where should you place them when you are using a horizontal band saw?
They guide the blade and should be adjusted to as close as possible to the work
Rolled threads are advantageous over machined threads because:
They have increased tensile strength They produce a burnished thread finish They have better wear resistance which reduces fatigue and shear problems
What can a damaged plasma torch shield cause?
Tip to overheat
Why is the pressure removed from the blade of a power hack saw on the return stroke?
To prevent damage to the blade
Why should you clean an lightly oil milling machine tables?
To prevent rusting which causes loss of accuracy
Carbon arc cutting can trim or cut parts made of ferrous and some non-ferrous metals
True
Do not fasten near welds with a low velocity tool because the steel may have been hardened making the metal brittle
True
Hex set screws may sometimes be doubled up
True
Most cordless drills have torque control
True
Overreaching will cause the ladder to tip over
True
Prolonged use of power or air tools can cause carpal tunnel sydrome
True
Side rails should extend a minimum of 1M above platform
True
The larger the power drill, the slower the RPMs and the higher the torque
True
Toe boards can't be less than 3.5" in height from surface work area
True
Welding tip sizes are 000,00,0 and 1-10
True
Wet wood can conduct electricity
True
When finishing with an emery cloth, the end held in your left hand passes under the workpiece and the end coming over the top it held in your right right hand
True
When the grain structure opens up in braze welding, tinning/amalgamation can occur
True
Worn wipers could allow chips to get between the carriage and the ways
True
You can use V-blocks on a milling machine
True
You must bleed all residual pressure when locking out
True
You must used the correct RPM when using a center drill or you will dull/break the bit
True
A drill press has a #2 Morse taper. A twist drill with a #3 Morse taper shank must be mounted in the spindle. How should you secure the drill in the spindle?
Use a drill socket
What is a shim used for on a milling machine?
Used as packing when supporting a work piece or lifting the back end of a strap clamp
How are step drills used?
Used to drill and then countersink
What is another name for a contour band saw?
Vertical band saw
What conditions would you use a GFCI
Wet conditions
For what purpose is the diamond dresser used?
When a very fine finish is required
When would you tighten the backlash eliminator
When climb milling
What is burnback?
When combustion takes place in tip/mixer causing black smoke, red sparks and a screeching sound from the tip
How do you designate the size of a bench vise?
Width of jaws
What is the level of accuracy for a plate protractor?
Within 1 degree
Can you use conventional drill bits with a hammer drill? Why or why not?
Yes of the hammer drill has a switch to turn off hammer action
What is the advantage of a dial bore gauge?
You can move it to various positions with making any adjustments
What is ZMS in terms of lockout?
Zero mechanical state
Which part of the combination set would be used to find the centre on the end of a shaft?
a centre head and rule
Tension load in regards to explosive actuated tools is:
a force applied perpendicular to the base of the material
Shear load in regards to explosive actuated tools is:
a force applied perpendicular to the fastener
An O-ring groove would be cut with:
a form tool
A rivet is:
a permanent fastener
The result of knurling is:
a workpiece slightly larger in diameter
Under properties of abrasives, to what does the term hardness refer?
ability of a material to scratch or penetrate another material
The removable serrated jaws on a bench vise made from:
aluminum
The kind of abrasive material use in grinding wheels for general purpose application is:
aluminum oxide
The kind of abrasive material used in grinding wheels for general purpose applications is:
aluminum oxide
Constant current maintains _______ and varies _______
amperage, voltage
A no go ring gauge is easliy identified by:
annular ring on the knurled surface
The purpose of the overarm is to support the ____________, which in turn supports the __________
arbor supports, free end of arbor
The ____ is the part of the wheel that holds the grains together
bond
What is a purpose of a flat (cold) chisel?
cutting off rivets
A high feed rate cuts metal quickly but:
decreases tool life
Cutting fluids are mainly used for:
decreasing heat and friction
Which variable is the most important when determining spindle speed?
diameter of the drill
To remove a tapered shank twist drill from the drill press spindle, use a:
drill drift
The hand drill is quicker and more versatile than any drill press for:
drilling small non-vertical holes
According to OH&S, what safety equipment is required when using an explosive actuate tool in a confined area such as a small room?
ear plugs and eye protection
To achieve a good knurl, you should:
flood the workpiece with coolant
The chuck best suited to holding odd-shaped pieces is the:
four-jaw chuck
Marks on the head of a bolt indicate the:
grade and tensile strength
What is a chisel made from?
high carbon steel
When filing a workpiece in a lathe hold the file handle:
in your left hand
What is a major cause of incomplete penetration?
incorrect joint design
The boring operation on a lathe:
increases the diameter of a hole in a workpiece
A thread is designated 5/8 - 11 Class 2A. The thread shown:
is an external thread
The headstock of a lathe:
is on the left and contains the spindle
The width of the saw blade cut in the workpiece is called:
kerf
What is a natural abrasive?
made of natural material rather than synthetic
A reamer is used to:
produce smooth accurate holes
The purpose of draw filing is to:
produces a smooth and flat surface
A blotter is used on a grinding wheel to:
protect the flanges from the abrasize grit, display information about the wheel and compensate for the uneven surfaces on the wheel
Belt grinders are useful for:
quickly deburring and chamfering a workpiece
Pullers are used to:
remove bearings, hubs and sprockets
For maximum reliability when setting dividers to a dimension on a steel rule:
set one point to the 1 inch or 10 MM graduation
Bending load in regards to explosive actuated tools is:
shear force that is applied at a distance for the surface base of the material creating a lever-type action on the fastener
The reason for the crown on the end of a flat scraper is:
so that the outside edges do not dig into the finished workpiece
The thread-chasing dial:
tells you when to engage the split nut
If the lines are scribed onto a workpiece it is considered to be:
temporary layout
Electric hand drills are limited by:
the amount of feed pressure (and rpm) that can apply to large-diameter drills
When a radius is being laid out on a corner?
the centre of the radius is located equidistant from the two adjacent sides
Trammels are used for scribing when:
the circle to be scribe is beyond the range of the dividers
In the lapping process, what is charged?
the lap
Before working around a load that has been raised with a hydraulic jack:
the load must be blocked
Lathes are considered to be more dangerous than other machines because:
they have not evolved with safety features like most machines
The thread chasing dial is used to:
time engagement of the split nut when cutting a thread
What is the purpose of ring test?
to check for cracks
The surface gauge is used:
to layout lines parallel to an edge
Why would you use parallels under a workpiece when plunge cutting a through-hole?
to prevent cutting in the table
To be a qualified operator of an explosive actuated tool you must posses:
training in the use of each tool and familiarity with local safety regulations
A lathe dog is used to:
transmit drive power to a mandrel or workpiece held between centres
The most common lathe operation is:
turning
What are permanent layout lines?
used to make sure layout lines are still visible
An out of balance wheel:
vibrates
Constant voltage maintains ______ and varies __________
voltage, amperage
If a grinding wheel makes a ringing sound what does that mean?
wheel is not cracked
The best wheel to use for cleaning scale and dirt off a workpiece is the:
wire wheel
Turning is usually done:
with a right-hand tool
If a high-speed steel hand tap breaks into a hole, one way to remove it is:
with an electrical discharge machine
When grinding a workpiece between centres, you feed:
with the carriage feed
before using a vernier height gauge it is important to:
zero the vernier to the reference surface
