Manufacturing quizzes T2
the from fibers to finished composite video shows how to make composite material. which kind of reinforcement is used? a. 1 D b. 2D c. isotropic
2D
a. removing photosresist, gernerating patterns by steppers, depositing photoresist b. gernerating patterns by steppers, removing photoresist, depositing photoresist c.depositing photoresist, gernerating patterns by steppers, removing photoresist d.depositing photoresist, removing photoresist gernerating patterns by steppers,
.depositing photoresist, gernerating patterns by steppers, removing photoresist
Which deposition method has higher depositing temp? a CVD (Chemical Vapor Deposition) b. PVD (Physical Vapor Deposition)
CVD
_____________is used for coated carbides while _________________ is used for coated HSS. A. PVD/CPD. B. CVD/PVD.
CVD/PVD
Both USM and RUM can machine circular holes and cavities a. true b. false
true
both usm and RUM are mechanical NTM non-traditional processes a. true b. false
true
in USM and RUM, the tool vibrates at a very high frequency a. true b. false
true
in USM, an abrasive slurry is used while in RUM a fix-abrasive tool is used a. true b. false
true
in ultrasonic machinging, either the tool or the workpiece virates at high frequency a. true b. false
true
some shapes can't be made with filament winding. a. true b. false
true
the NASA composet intro video shows taht a tree is a composite material. a. true b. false
true
warped wafer will be generated from both ID saw and wire saw. a. true b. false
true
when the applied load is below the endurance strength, the material will never fail regardless of the number of loading cycles a. true b. false
true
the purpose of truing and dressing is to prepare the grinding wheel to have correct form, concentricity and cutting action. Which one of the following is NOT true? a. some abrasive grains should be removed fromt he wheel during truing/dressing b. truing/dressing can be only done by using a multi-point diamond tool
truing/dressing can be only done by using a multi-point diamond tool
the purpose of truing and dressing is to prepare the grinding wheel to have correct form, concentriccity and cutting action. what is NOT true? a. truing/dressing is sometimes called balancing b. some abrasive grains should be removed from the wheel during truing/dressing c. truing/dressing can be done by using a single-oint diamond tool or a multi-point diamond tool
truing/dressing is sometimes called balancing
curing is the drying and hardening (or polymerization) of the resin matrix of a finished composite. this may be done --- by applying heat and /or pressure a. unaided b. aided c. unaided or aided
unaided or aided
which one of the ofllowing is NOT amon the limitations of EDM? a. low material removal rate b. long lead time c. workpiece material must be conductive d. can cut only one hole at a time
can cut only one hole at a time
IC and PCB are two terms that --- be used interchangeably a.can b. cannot
cannot
a composite material is composed of two or more materials. the individual components ---attain all the properties oft he composite materials a. cannot b. can
cannot
there are four "families" of materials processing processes a. casting, material removal, deformation, and consolidation b. turning, milling, boring, and grinding c. casting, grinding, welding,a nd forming d. sand casting, laser machining, water jet machining, ultrasonic machining
casting, material removal, deformation, and consolidation
which one of the fibers has high temp resistance? a. glass b. carbon c. boron d. ceramic e. metallic
ceramic
--- is used to obtain a flat surface a. deposition b. plasma etching c. photolithography d. chemical-mechanical polishing
chamical-mechanical polishing
even if we have a process that is in control, which causes of variations will still exist int he process? a. assignable causes b. chance causes c. none of the two d. both of them
chance causes
which one of the following processes is like a "corrosion process" a. chemical machining b. electrochemical machining c. abrasive flow machining d. ultrasonic machining
chemical machining
generally speaking, which one of the following areas has the largest composite consumption? a. space and defense b. commercial aerospace c. industrial d. electronic
commercial aerospace
what materials are used to maufacture the cutting tools for end mills? a. steels b. carbides (tungsten carbides) c. both a and b
both a and b
which one of the following is true for double disk grinding? a. both sides of a grinding wheel are grinding the workpiece b. both sides of a workpiece are being ground at the same time
both sides of the workpiece are being ground at the same time
Up milling and down milling refer to ---- a. slab milling only b. face milling only c. both slab and face milling
both slab and face milling
The heating and cooling cycle of a welding process can affect the metallurgical and quality of ______ a. . both the weld and adjacent material. B. only the weld. C. only the adjacent material
both the weld and adjacent material.
four primary grinding types are cylindrical, internal, centerlesss and surface grinding. Whis is true? a. both wheel and workpiece rotates b. wheel rotates and workpiece does not rotate c. workpiece rotates and wheel does not rotate
both wheel and workpiece rotate
which one of the following belongs to copper-zinc alloys?? a. steels b. both steels and cast iron c. brasses d. bronzes e. both brasses and bronzes
brasses
in autoclave molding process, the pressure --- reduce time a. can b. cannot
can
in composite manufacturing, which one of the following processes belongs to closed-mold processes? a. autoclave molding b. pressure-bag molding c. vacumm-bag molding d. filament winding e. compression molding
compression molding
Ductile materials tend to result in ____________ chips a. continuous b. discontinuous
continuous
the mold is --- in thermoplastic injectioin molding a. cooled b. heated c. cooled or heated
cooled
The first, and most critical step in the manufacturing of silicon wafers is ______. A. wafer slicing. B. wafer polishing. C. crystal growth. D. epitaxial deposition. E. wafer polishing.
crystal growth
which one of the following processes belongs to molding processes? a. imprenation b. curing c. extraction d. trimming
curing
abrasive machining is a mixture of ---- a. cutting and plowing b. plowing and rubbing c. cutting and rubbing d. cutting, plowing and rubbing
cutting, plowing and rubbing
whcih one is not the purposed of ingot shaping process? a. decrease the surface roughness of ingot surface b. obtain the uniform ingot shape c. gernerate flats to identify the front and back surfaces
dcrease the surface roughness of ingot surfaces
Increasing rake angle typically will _________ cutting force a. increase 'b. decrease
decrease
The total cost per unit for a machining process will ____________ as cutting speed increases A. decrease B. increase C. decrease to a point and then increase
decrease to a point and then increase
As shear angle increases the chip thickness --- 1. increases 2. decreases
decreases
which one of the following is NOT true regarding creep feed grinding? a. depth of cut is much smaller b. the feed rate is much smaller c. it requires much more horsepower
depth of cut is much smaller
generally, speaking, which one of the following casting processes has the highest production rates? a. sand casting b. invest casting c. die casting
die casting
which one of the following casting processes doesn't need patterns a. sand csting b. investment casting c. die casting
die casting
for a standard twist drill, the rake angle along the main cutting edges (lips) is --- a. different at different point b. same everywhere
different at different points
in spray-up process, --- fibers and resins are sprayed simultaneously into or onto the mold a. continuous b. discontinuous c. both
discontinuous
LBM --- generate cutting forces a. does b. does NOT
does NOT
to fabricate integrated circuits three types of materials are needed: conductors, insulators, and semiconductors. which is a conductor? a. doped polysilicon b. silicon dioxide c. silion
doped polysilicon
which one of the following orders represents the surface roughness order (from roughest to smoothest) ? a. honing>reaming>drilling b. reaming>drilling>honing c.drilling>reaming>honing d.drilling>honing>reaming
drilling>reaming>honing
generally speaking, turning can --- the wheel a. sharpen b. dull
dull
the electrode use din arc welding is --- a. always consumable b. always non-consumable c. either consumable or non-consumable
either consumable or non-consumable
what is the final step in making the ICs according to the video? a. chemical mechanical polishing b. doping c. electrical testing and packaging
electrical testing and packagine
which one of the following processes is the reverse of electroplating? a. chemical machining b. electrochemical machining c. abrasive flow machining d. ultrasonic machining
electrochemical machining
Pockets can be machined by --- milling a. slab b. face c. end
end
in a milling operation, if the surface generated is perpendicular to the cutter rotation axis, it is called--- milling a. slab b. face
face
Grinding operation is widely used in automotive industry, but has no applications in semiconductor industry a. true b. false
false
both USM and RUM can machine non circular holes and cavities a. true b. false
false
which one of the following processes involves separating each good die from the wafer? a. wafer sort testing b. final assembly c. packaging
final assembly
grain size, bond type and pore size all affect the wheel performance. t=which one of the following is not true? a.finer grain size produces rougher surface b. vitrified bond system is more rigid and more brittle than resin bond system c. pore space determines if the wheel has an "open" structure or "closed" structure
finer grain size produces rougher surface
BUE (built-up edge) is undesirable for ________ cutting but sometimes is desirable for ______ cutting. a. rough/finish b. finish/rough
finish/rough
LBM (laser beam machining) and AWM (abrasive waterjet machining) are primarily used to cut ---. a. flat sheets b. cylindrical parts c. hollow cavities
flat sheets
LBM laser beam machinining is used a. for cutting small holes b. for cutting large holes c. for cutting both
for cutting both
the completed chips are loaded on buringin boards and then put into ovens. the chips will be stressed far beyond normal conditions. the purpose of doing so is to --- a. strain harden the chips so they will have higher strenght b. force the weak chips to fail prematurely before they are put into products.
force the weak chips to fail prematurely before they are put into products
which one of the following processes does not gerneate HAZ? a. LBM laser beam machining b. oxygen fuel cutting c. PAC plasma arc cutting d. AWM abrasive waterjet machining
AWM
in a turning operation, if the initial diameter minus the final diameter equals 8 mm, what is the depth of cut? a. 1 mm b. 2 mm c. 4mm d. 8 mm
4 mm
superabrasives include CBN and diamond. ---- wheels are used to grind ferrous metals; the other wheels are used to grind non-ferrous metals and nonmetals a. CBN b. diamond
CBN
will increasing the feedrate improve the surface quality? a. yes b. no
no
Which one represents the correct order (from hardest to softest) of hardness for tool materials? A. Diamond > HSS > Carbides > Ceramics > CBN. B. Diamond > CBN > Ceramics >Carbides > HSS. C. Diamond > HSS > CBN > Carbides > Ceramics.
Diamond > CBN > Ceramics >Carbides > HSS
comparing to silicon, (GaAs) has several advantages as the semiconductor material for ICS. what is true? a. GaAs can provide faster speed b. GaAs is more abundant in the earth c. GaAs is cheaper than silicon d. the manufacturing of GaAs chips is less complex than solicon chips
GaAs can provide faster speed
For tool materials, Powder metallurgy technique can be used to fabricate ________. A. HSS, but not carbides and ceramics. B. HSS and carbides but not ceramics. C. HSS, carbides and ceramics D. carbides and ceramics but not HSS.
HSS, carbides and ceramics
Hot working can improve the mechanical properties. Which one is NOT the reason for the improvement? a.The starting structure is replaced with one of fine, spherical-shaped grains. b.Homogenous (uniform) metallurgical structure is obtained. c.The product exhibits a yfiber structurey and impurities can often be reoriented into a ycrack-arrestory configuration.
Homogenous (uniform) metallurgical structure is obtained
Which type of saws produce only single wafers at a time? A. ID saws. B. wire saws. C. none of these two saws.
ID saws
gernerally speaking, which one of the following processes gernerates the most accurate tolerance? a. LBM laser beam machining b. oxygen fuel cutting c. PAC plasma arc cutting d. AWM abrasive waterjet machining
LBM
for surface roughness measurements, in most cases, --- is used as the roughness value a. Rmax b. Ra c. Rmin d. RMS
Ra
Silicon wafers are sliced from the ingot using____________. A. ID saws only. B. wire saws only. C. none of these two saws. D. both ID and Wire saws.
both ID and Wire saws.
Which one of the following is NOT true regarding strain hardening? A. Strain hardening is eliminated in hot working. B. The degree of strain-hardening is different for different metals (Metals with a smaller strain-hardening coefficient n will have smaller change in strength with plastic deformation). C. Strain hardening will NOT increase the forces and power required for cold working.
Strain hardening will NOT increase the forces and power required for cold working.
For fusion welding, the center of the weld is a region called fusion zone. Which one of the following is NOT true regarding to this fusion zone? A. The microstructure depends on the cooling rate in the weld. B. This region cannot be expected to have the same properties as those of the base material being welded. C. The chemical composition of this region depends on the base metal and filler material. D. The grain structure in this region is always coarse.
The grain structure in this region is always coarse.
In regard to ECM (electrochemical machining), which one of the following is NOT true? A. ECM is basically the reverse of electroplating. B. Both tool and workpiece must be electrically conductive. C. The harder the workpiece material, the slower the metal removal rate. D. There is no wear of the tool during actual cutting as the tool is protected cathodically. E. The process produces a stress-free surface. .
The harder the workpiece material, the slower the metal removal rate.
Which one of the following is NOT among the benefits of elevated temperatures in hot working? A. The effects of strain hardening is eliminated. B. The metallurgical structure will always be uniform. C. They reduce the requirement of excessively high forces. D. They promote diffusion that can remove or reduce chemical inhomogeneities. .
The metallurgical structure will always be uniform
Which one of the following does not belong to the family of deformation processes? a. forging b. extrusion c. drawing d. boring
boring
for a given uncut chip thickness in orthogonal cutting, a smaller shear angle means----. a. a longer shear plane and a lower cutting force b. a shorter shear plane and a lower cutting force c. a shorter shear plane and a higher cutting force d. a longer shear plane and a higher cutting force
a longer shear plane and a higher cutting force
in wire-EDM, ---- a. a moving wire is used as the tool b. wire products are produced
a moving wire is used as the tool
in lapping processes, the material of lapping plate is --- than the wafer material
a. harder b. softer
the instrument panels (made of metals) are cut by what process? a. twist drilling b. end milling c. laser cutting d. abrasive water jet cutting
abrasive water jet cutting
According tot the video, when the cutting lfuid is appled into cuttin zone, many things will happen.What wont happen? a. the shear angle increases b. cutting temp decreases c. BUE disappears d. power consumption decreases e. actual clearance angle decreases
actual clearance angle decreases
which one of the following statemenst are NOT true? a.1-D reinforcement gives max trength in one direction b. 2-D reinforcement gives max trength in two direction c.isotropic strength equally in all directions d. isotropic strength differently in all directions
all directions
Which one of the following abrasives is the most widely used artificial abrasive? a.. Silicon carbide. B. Aluminum oxide. C. Cubic boron nitride
aluminum oxide
die casting can typically prodcue parts with --- dimensional precision and surface qualities than sand casting a. worse b. better
better
punching operation a. piercing b. blanking
blanking
you are at SEMICON west where companies exhibit their products. you are interested in buying a CMP machine for your companuy. Where should you look for CMP machines? a. front end processes b. back end processes
front end processes
resistance welding is in the group of a. fusion welding b. solid-state weldin
fusion welding
which one of the following welding processes involves melting the base metal a. fusion welding b. solid-state welding
fusion welding
in a MOS transistor, which one of the following controls the current flow? a. source b. gate c. drain
gate
which one of the fibers has the lowest cost and the most widely used? a. glass b. carbon c. boron d. ceramic e. metallic
glass
between lapping and grinding, which one has higher MRR? a. lapping b. grinding
grinding
between lapping and grinding, which one uses fixed abrasives? a. lapping b. grinding
grinding
in buring oven, the chips will be powered up to expose high temp for several hours. the purpose of doing so is to --- a. encourage potential defects to occur faste b. heal (fix) the defects in these chips
healf the defects in these chip
The magnitude of the shear angle is of fundamental importance. For any given uncut chip thickness, a small shear angle means a --- cutting force 1. high 2. low
high
the movie shows maufacturing of the grinding wheels. in making these wheels, the processes are --- a. very labor-intensive b. highly automated
highly automated
in composite manufacturing, which one of the following processes does not belong to molding operation? a. lay-up b. curing c. imprenation
imprenation
Generally speaking, lapping will _______ the wafer flatness. a. improve b. deteriorate
improve
When the depth of cut increases, the cutting force will typically --- 1. increase 2. decrease
increase
gernally speaking, a decrease in cutting speed will --- the tool life a. increase b. decrease
increase
if more dopant is added to silicon, then the conductivity of silicon will --- a. increase b.decrease c. staty the same
increase
In EDM, as the on-time increases, the overcut --- a. increases b. decreases
increases
generally speaking, as tensile strength increases, hardness --- a. increases b. decreases
increases
which one of the following processes useds the close-mold? a.vacuum bag molding b. pressure-bag molding c pultrusion d. manual lay-up e. injection molding
injection molding
when machining very hard materials such as hardened metals and ceramics, grinding operation --- preferable to turning and milling a. is b. is NOT
is
milling operations are used to machine flutes (or groves) in the blanks of the cutting tools. Is it appropriate to use milling to machine the flute for the cutting tools made of tungsten carbides? a. yes b. no
no
Which one of the following statements is NOT true regarding a honing operation? a. the tool used is a stone made by bonded abrasives b. it removes a small amount of material from the surface of holes c. it cannot remove common eroors left by boring d. it can remove grinding marks left by grinding
it cannot remove common errors left by boring
polywood is one of the composite materials. it belongs to what type? a. fiber b. particle c. laminar d. flake e. filled f. none of the above
laminar
Generally speaking, the --- the rake angle, the sharper the cutting edge 1. larger 2. smaller
larger
comparing to traditional machining processes, thermal cutting processes will generate --- accurate tolerances. a. more b. less
less
in orthogonal cutting, cutting speed has ---- significant effects on cutting force than depth of cut a. more b. less
less
Generally, the ---the roughness value, the smoother the surface a. higher b. lower
lower
composite materials have --- density than aluminum a.lower b. higher
lower
for the thermoset, the melting temp is --- than curing temp a. higher b. lower
lower
generally, grinding processes produce --- surface roughness value than drilling processes a. higher b. lower
lower
the strength of a soldered joint is --- than that of a brazed joint a. higher b. lower c. about the same as
lower
Whether the chip is continuous or discontinuous is determined by several factors. Which has the least effects on the chip type? a. machine tool horsepower b. workpiece material c. cutting speed d. tool rake angle e. whether the cutting tool is in continuous contact with workpiece
machine tool horsepower
in fusion welding, fill metals --- used a. will always be b. will never be c. may or may not be used
may or may not be used
most semiconductor processes occur in the top few --- of a silicon wafer a. nanometers b. microns c. hundreds of microns
microns
twitst drilling is a kind of ---. a. single-point machining b. multi-point machining c. abrasive machining
multi-point machining
Chemical etching is _______ for the removal of residual surface damage caused by lapping. a. necessary b. unnecessary
necessary
flank wear occurs on a. the tool face that interacts with the newly-generated chip b. the tool face that interacts with the newly-generated surface of workpiece
newly-generated srface of workpiece
diamond grinding wheels are used to grind the cutting tools. is it appropriate to use diamond grinding wheels to grind the cutting tools of steels? a. yes b. no
no
Which one of the following is NOT among the benefits of cold working? a.Better surface finish is obtained. B. Superior dimensional control is achieved. C. Strength, fatigue and wear properties are improved through strain hardening. D. No residual stress is produced
no residual stress is produced
the desired qualities for an ideal tool material are: harder than workpiece; retain hardness at high templ resist wear and thermal shock; impact resistant; chemically inert. Which one of the following tool materials incorportaes these qualities? a. diamond b. ceramics c. HSS d. none
none
generally speaking, which process generates more hAZ? a. oxygen fuel cutting b.PAC plasma arc cutting c. AWM abrasive waterjet machining
oxygen fuel cutting
among the following three back end IC maunfacturing processes, which one is the last step? a. wafer sort testing b. final assembly c. packaging
packaging
accoriding to the continuous-cooling-transformation diagram, very slow cooling rate will obtain ---. a. martensite b. baiite c. pearlite d. ledeburite
pearlite
rivet holes are punched a. piercing b. blanking
piercing
which one of the matrices are most commonly used in industry? a. polymer b. metal c. ceramic d. carbon
polymer
which one of the molding processes appears int he video of how it's made : hunting bows? a.vacuum bag molding b. pressure-bag molding c pultrusion d. manual lay-up e. injection molding
pressure bag- molding
what will determine the diameter of the ingot during crystal growth? a. temp b. pull rate c. rotatting speed of the seed
pull rate
the movie shows manufacturing of the grinding wheels. in these wheels, what bond materials are used? a. resin b. vitrified c. metal
resin
normally the products of ---- can only be obtained in standard shapes and sizes a. rolling b. extrusion c. forging
rolling
in EDM, the onger the on-time,the --- the surface generated a. rougher b. finer
rougher
there are two different packaging levels for electronic ocmponents. the first level packaging is the chip assebly and packaging. in the second level packaging, the IC component is assembled onto a PCB the gigure aboe shows a typical product after which level of packaging? a. first level b. second levle
second level
generally speaking, grinding can --- the grinding wheel a. sharpen b. dull
sharpen
resistance welding is primarily used for welding--- a. sheet metals b. round metals
sheet metals
Which one of the following is NOT a consequences of tool wear? a. increases required power b. loss of production during tool changes c. tolerance control is lost d. shinny and nice surface finish on the product
shinny and nice surface finish on the product
between the two abrasive materials (aluminum oxide and silicon carbide) which one is inferior for grinding steels, becasue of its chemical reactivity with the steels? a. aluminum oxide b. silicon carbide
silicon carbide
Boring is a kind of a. single-point machining b. multi-point machining c. abrasive machining
single-point machining
in slab milling, the surface is generated by teeth located on the periphery a. slab b. face c. end
slab
if you want a larger ingot diameter, which pull rate should be used? a. faster b. slowe
slower
In creep feed grinding, the work feed is much ________ than that in conventional surface grinding. a. smaller b. larger
smaller
the abrasive particles used in polishing process is --- than those used in lapping? a. smaller b. larger
smaller
In lapping processes, the material of the lap is always _____ than the material to be finished. a. harder b. softer
softer
--- is used to mount IC components on printed circuit boards a. soldering b. brazing c. welding
soldering
friction welding is in the group of --- a. fusion welding b. solid-state welding
solid-state welding
X, Y, Z a. emitter, base, collector b. ampde. grid, cathode c. source, drain, gate d. source, gate, drain
source, gate, drain
most products are not made as a single piece. instead, they consist of more than two parts joined together. which one of the following is NOT amond the reasons for doing so? a. it is more economical or easier to manufacture this way b. for maintenacne and repaire c. different parts can have different properties d. for ease of transportation e. the joined product is typically stronger than a single piece
the joined product is typically stronger than a single piece
in regard to EDM and wire EDM, which one of the following is TRUE? a. the workpiece material does not have to be electrically conductive b. the melting point, hardness, toughness, or brittleness of the workpiece material will impose no limitations c. there is no wear of the tool during actual cutting d. the forces between the tool and the workpiece are not vitually zero
the melting point, hardness, toughness, or brittleness of the workpiece material will impose no limitations
in the equation to calculate the cutting speed in milling, v=pi*DN, D is the diameter of --- a. the workpiece b. the hole being machined c the tool
the tool
crater wear occurs on ---- a. the tool face that interacts with the newly-generated chip b. the tool face that interacts with the newly-generated surface of workpiece
the tool face that interacts with the newly-generated chip
EDM electrical discharge machining has several benefits. which one of the following is NOT? a. no cutting forces b. burr-free edges c. intricate details can be cut d. the tool never wears
the tool never wears
which kind of matrix can be reused? a. thermoset b. thermoplastic
thermoplastic
plastic injection molding processes are used mainly for --- a. thermosets b. thermoplastics
thermoplastics
which plastic materials are more suitable for making handles on cooking wares (pots and pans)? a. thermoplastics b. thermosets
thermosets
Most cutting processes are 1. three dimensional 2. orthogonal cutting
three d
what is the primary purpose of kanban systems? A.To control inventory. B. To reduce cycle time. C. To reduce setup time. D. To implement singe piece flow. E. To reduce variations in the products. .
to control inventory
an ideal cutting fluid has many benefits. Which one of te following is NOT one? a. to increase tool life b. to create no or less rust on machine tool c. to create no o less pollution to encironment d. to increase the yiedl strength of workpiece material
to increase the yiedl streength of workpiece material
which one of the following is NOT true regarding deformation processes? a. all processing is done in the solid state b. the forces required are often high c. machinery and tooling can be quite expensive d. unwanted regions are cut away so the amount of waste is large
unwanted regions are cut away so the amount of waste is large
the surface roughness and accuracy produced by grinding is generally ---- that produced by turning or milling a. up to 10 times better than b.worse than c. about the same as
up to 10 times better than
the movie shows manufacturing of airplanes. in making these airplanes, the processes are a. very labor-intensive b. highly automated
very labor-intensive
there are three major bond systems for grinding wheels: vitrified, organic, and metal. Which of the following associations are true? a. vitrified-glass, organic-resin b. organic-glass, vitrified-resin
vitrified glass, organic-resin
IC fabrication involves five gerneral stages. crystal growing is in the stage of --- a. wafer preparation b. wafer fabrication c. wafer test/sort d. assembly and packaging e. final test
wafer fabrication
in AWM, consumables --- be used a. will b. will NOT
will
in brazing and soldering, filler metals --- used. a. will always be b. will never be c. may or may not be
will always be used
riveting is used when-- a. the joined parts will not be sparated apart in the future b. the joined parts will be separated int he future
will not be separated
in solid state welding, the tem at the welding interface -- the melting point of the workpiece materials a. will not exceed b. will exceed
will not exceed
between wirepsawing and ID sawing, which one yieldsm ore wafers per unit lengthof crystal ingot a. wire sawing b. ID sawing
wire sawing
Will honing operations after drilling improve the surface quality? a. yes b. no
yes
diamond grinding wheels are used to grind the cutting tools. is it appropriate to use diamond grinding wheels to grind the cutting tools of tungsten carbides? a. yes b. no
yes
is the welding process used int he maufacturing of airplanes? a. yes b. no
yes
milling operations are used to machine flutes (or groves) in the blanks of the cutting tools. Is it appropriate to use milling to machine the flute for the cutting tools made of steels? a. yes b. no
yes
one part was made by a casting process. it was found that the hardness of this part was not high enough during service. can we improve the part's hardness by using (cold) forming processes instead of casting? a. yes b. no
yes
will increasing the drill rotational speed improve surface quality? a. yes b. no
yes
will using a reaming operation after drilling improve the surface quality? a. yes b. no
yes
