Answer: A

Heating above the transformation range, usually 1300oF to 1350oF, and cooling slowly to soften the metal and increase in machining.

A. AnnealingB. HardeningC. NormalizingD. Tempering

Answer: B

Heating above the transformation temperature and quenching usually n oil, for the purpose of increasing the hardness.

A. AnnealingB. HardeningC. NormalizingD. Tempering

Answer: C

Reheating to a temperature below the transformation range, followed by any desired rate of cooling to attain the desired properties of metal.

A. AnnealingB. HardeningC. TemperingD. Stress Relieving

Answer: D

Heating to a subcritical temperature, about 1,100oF to 1,300oF and holding at that temperature for a suitable time for the purpose of reducing internal residual stresses.

A. AnnealingB. HardeningC. TemperingD. Stress Relieving

Answer: C

Heating to some 100oF above the transformation range with subsequent cooling to below that range in still air at room temperature to produce uniform structure of the metal.

A. AnnealingB. HardeningC. NormalizingD. Tempering

Answer: A

A machine tool used for producing holes in metal by the use of a cutting tool called drill.

A. Drilling MachineB. Boring MachineC. Milling MachineD. Broaching Machine

Answer: C

A machine tool used to form metals parts by removing metal from a workpiece by the use of a revolving cutter with many teeth each tooth having a cutting edge which removes its share of the stock.

A. Drilling MachineB. Boring MachineC. Milling MachineD. Broaching Machine

Answer: A

A machine tool used to sharpen or shape tools by using an abrasive wheel.

A. tool grinderB. shaperC. planerD. power saw

Answer: B

A machine tools used to enlarge a hole by means of an adjustable cutting tool with only one cutting edge.

A. drilling machineB. boring machineC. milling machineD. broaching machine

Answer: D

A machine tool used to cut metal parts of light, medium, and large sections using a reciprocating hacksaw blade.

A. tool grinderB. shaperC. planerD. power saw

Answer: B

A machine tool used to machine flat or plane surfaces with a single point cutting tool.

A. tool grinderB. shaperC. planerD. power saw

Answer: C

A machine tool used for production of flat surfaces on pieces too large or too heavy to hold in a shaper.

A. tool grinderB. shaperC. planerD. power saw

Answer: D

A machine tool used to finish internal or external surfaces, such as holes or keyways by the used of a cutter called a broach, which has a series of cutting edges or teeth.

A. drilling machineB. boring machineC. milling machineD. broaching machine

Answer: B

An alloy of copper and tin.

A. brassB. bronzeC. IronD. Tin

Answer: A

An alloy of copper and zinc.

A. brassB. bronzeC. IronD. Tin

Answer: A

The process of forming metal parts by the use of dies after the metal is heated to its plastic range.

A. rollingB. forgingC. turningD. casting

Answer: B

The process of forming a metal parts by the use of a powerful pressure from a hammer or press to obtain the desired shape, after the metal has been heated to its plastic range.

A. rollingB. forgingC. turningD. casting

Answer: A

A manganese steel containing approximately 0.20% carbon.

A. SAE 1320B. SAE 1230C. SAE 2340D. SAE 4230

Answer: A

A machine tool in which metal is removed by means of a revolving cutter with many teeth, each tooth having a cutting edge which remove its share of the stock.

A. milling machineB. broaching machineC. lathe machineD. boring machine

Answer: C

A metal turning machine tool in which the work, while revolving on a horizontal axis, is acted upon by a cutting tool which is made to move slowly (feed) in a direction more or less parallel to the axis of the work (longitudinal feed)

A. milling machineB. broaching machineC. lathe machineD. boring machine

Answer: B

A machine tool used in the production of flat surfaces on pieces too large or too heavy or, perhaps too awkward to hold in a shaper.

A. shaperB. planerC. tool grinderD. power saw

Answer: C

It consist of shaping a piece by bringing it into contact with a rotating abrasive wheel.

A. drillingB. boringC. grindingD. broaching

Answer: A

A tool used in measuring diameters.

A. caliperB. nanometerC. tachometerD. pyrometer

Answer: B

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.

A. dial gaugeB. dial indicatorC. tachometerD. speedometer

Answer: B

The ability of metal to be deformed considerably without rupture.

A. ductilityB. plasticityC. malleabilityD. elasticity

Answer: C

The shop term used to include the marking or inscribing of center points, circles, arcs, or straight lines upon metal surfaces, either curved or flat, for the guidance of the worker.

A. shapingB. hobbingC. laying outD. shaping

Answer: D

An operation of sizing and finishing a hole by means of a cutting tool having several cutting edges.

A. notchingB. piercingC. turningD. reaming

Answer: A

The operation of making a cone-shaped enlargement of the end of a hole, as for a recess for a flat head screw.

A. countersinkingB. knurlingC. squaringD. perforating

Answer: D

The operation of enlarging a hole by means of an adjustable cutting tool with only one cutting edge.

A. drillingB. broachingC. millingD. boring

Answer: A

An imaginary circle passing through points at which the teeth of the meshing gears contact each other.

A. pitch circleB. addendum circleC. dedendum circleD. base circle

Answer: B

A 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.

A. u - boltB. carriage boltC. eye boltD. stud bolt

Answer: C

The number of teeth per inch of pitch diameter and which gives some indications of the size of the gear teeth.

A. moduleB. pitch circleC. diametral pitchD. circular pitch

Answer: A

The distance from the center of one tooth of a gear to the center of the next consecutive tooth measured on the pitch.

A. circular pitchB. moduleC. diametral pitchD. pitch circle

Answer: C

The portion of a gear tooth that projects above or outside the pitch circle

A. top reliefB. dedendumC. addendumD. tooth space

Answer: B

The portion of a gear tooth space that is cut below pitch circle and is equal to the addendum plus the clearance.

A. top rootB. dedendumC. addendumD. top land

Answer: C

When meshed with a gear, it is used to change rotary motion to reciprocating motion.

A. gear shaftB. gear toothC. gear rackD. gear motor

Answer: B

A kind of gears used for heavy duty works where a large ratio of speed is required and are extensively used in speed reducers.

A. bevel gearsB. worm gearsC. helical gearsD. spiral gears

Answer: A

A kind of gears used to transmit motion from one shaft to another shaft at an angle to the first.

A. bevel gearsB. worm gearsC. helical gearsD. spiral gears

Answer: B

The uniform heating of steel above the usual hardening temperatures, followed by cooling freely in air.

A. annealingB. normalizingC. hardeningD. tempering

Answer: A

The operation of cooling a heated piece of work rapidly by dipping it in water, brine or oil.

A. quenchingB. temperingC. normalizingD. annealing

Answer: D

A method 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.

A. broachingB. quenchingC. normalizingD. annealing

Answer: B

The total permissible variation in the size of a dimension; the difference between the limits of size.

A. allowanceB. toleranceC. varianceD. interface

Answer: A

The operation of machining the end of a workpiece to make the end square with the axis.

A. squaringB. buffingC. lappingD. honing

Answer: B

The clearance between the tooth profiles of a gear tooth.

A. toothspaceB. backlashC. flankD. width

Answer: C

A mechanism which usually do the indexing in a machine tool.

A. slotterB. chuckC. dividing headD. indexer

Answer: B

A material that can wear away a substance softer than itself.

A. phenolB. abrasiveC. tungstenD. chromium

Answer: C

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.

A. grooveB. lapC. tapD. flute

Answer: A

A set of gages consisting of thin strips of metal of various thickness mounted in a steel case or holder and is widely used for measuring and checking clearances.

A. feeler gageB. depth gageC. line center gageD. lay-out gage

Answer: D

A machine tool which is very similar to a shaper except that the ram reciprocates vertically rather than horizontally

????A. latheB. grinderC. planerD. slotter

Answer: B

A machine tool used principally to machine flat or plane surfaces with single-point cutting tool.

A. grinderB. shaperC. planerD. turret lathe

Answer: A

A kind of bolts which has no head and instead has threads on both ends.

A. stud boltsB. acme threaded boltsC. square threaded boltsD. hex bolts

Answer: B

A kind of chuck which has a reversible jaws which could be adjusted separately.

A. collet chuckB. independent chuckC. four jaw chuckD. two jaw chuck

Answer: C

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 machined.

A. mashB. buttC. mandrelD. wobble

Answer: D

A kind of chuck which should not be used where extreme accuracy is required.

A. collet chuckB. magnetic chuckC. four jaw chuckD. Universal chuck

Answer: A

The process of checking or producing checkers on the surface of a piece by rolling checkered depressions into the surface.

A. knurlingB. hemmingC. breadingD. embossing

Answer: C

It fits into the main spindle or a lathe and is so called because it acts as a bearing surface on which the work rests. It revolves with the work. When compared with the hardness of the dead center in the tailstock, it is usually soft, and is so made since it does no work.

A. ram centerB. spindle centerC. live centerD. bearing center

Answer: A

A gripping device with two or more adjustable jaws set radially.

A. chuckB. carriageC. tailstockD. fan

Answer: C

Steel balls for ball bearings are manufactured by:????

A. turningB. rollingC. castingD. cold heading

Answer: B

Addendum of a cycloidal gear tooth is:

A. cycloidB. epicycloidsC. straight rackD. involute

Answer: A

In a lathe, it comprises the main spindle, the necessary mechanism for obtaining the various spindle speed and also certain gears which are used to operate the quick-change gear mechanism.

A. headstockB. carriageC. tailstockD. fan

Answer: B

The process of heating a piece of steel to a temperature within or above critical range and cooling rapidly.

A. normalizingB. hardeningC. annealingD. tempering

Answer: C

Welding operation in which a non-ferrous filler metal melts at a temperature below that of the metal joined but is heated above 450oC.

A. gas weldingB. spot weldingC. brazingD. steam welding

Answer: C

Uniting two pieces of metal by means of a different metal which is applied between the two in molten state.

A. castingB. weldingC. solderingD. brazing

Answer: A

Fusion process in which the metal is heated into a state of fusion permitting it to flow together into a solid joint.

A. electric arc weldingB. gas weldingC. spot weldingD. projection welding

Answer: B

Joining metal by means of high current at low voltage. During the passage of current, pressure by the electrodes produces a forge weld.

A. spot weldingB. resistance weldingC. steam weldingD. gas welding

Answer: D

A device for accurately measuring diameters.

A. radiometerB. profilometerC. spectrometerD. micrometer

Answer: B

A group of thin steel strips for measuring clearances.

A. distortion gageB. feeler gageC. line center gageD. deflection gage

Answer: A

A hand tool used to measure engine crank web deflections.

A. distortion gageB. feeler gageC. line center gageD. deflection gage

Answer: B

A hand tool used to measure tension on bolts.

A. indexerB. torque wrenchC. torsionmeterD. tensiometer

Answer: B

The permissible variation in the size of a dimension; the difference between the limits of size.

A. allowanceB. toleranceC. varianceD. interface

Answer: B

A gear with teeth on the outer cylindrical surface.

A. outer gearB. external gearC. spiral gearD. helical gear

Answer: C

The diameter of a circle coinciding with the top of the teeth of an internal gear.

A. pitch diameterB. root diameterC. internal diameterD. central diameter

Answer: A

A circle coinciding with a tangent to the bottom of the tooth space.

A. root circleB. pitch circleC. addendum circleD. dedendum circle

Answer: C

The total depth of a tooth space, equal to the addendum plus dedendum.

A. full depthB. working depthC. whole depthD. dedendum

Answer: A

The depth of tooth space below the pitch circle.

A. dedendumB. working depthC. full depthD. tooth depth

Answer: A

The ratio of gear teeth to each mm pitch diameter.????

A. diametral pitchB. moduleC. circular pitchD. english module

Answer: B

A machine tool in which abrasive wheel is used as cutting tool to obtain a very smooth finish.

A. drillB. grinderC. planerD. shaper

Answer: D

It is used to produce a variety of surfaces by using a circular-type cutter with multiple teeth.

A. grinding machineB. shaperC. drilling machineD. milling machine

Answer: B

It is used principally to machine flat or plane surfaces with a single-point tool.

A. drillB. shaperC. planerD. tool grinder

Answer: C

Cutting a hole by means of rotating tool or the work may revolve and to the tool remain fixed in the lathe.

A. piercingB. notchingC. boringD. perforating

Answer: A

One of the following is not a tap used for cutting threads in holes.

A. tapping tapB. plug tapC. taper tapD. bottoming tap

Answer: B

An index o dividing head.

A. a part of a drill pressB. used to rotate the workC. not used to cut helixesD. always manually operated

Answer: B

Galvanized iron is a term referring to iron coated with:

A. tinB. zincC. magnesiumD. aluminum

Answer: C

The moment of inertia of a rectangle whose base is “b” and height “h” about its base is:

A. bh3/12B. bh/36C. bh3/3D. bh2/4

Answer: C

In usual spur gearing:

A. the pitch circle and the base circle are the same

B. working depth includes the clearanceC. tooth outline are usually involute

curvesD. tooth outline are always cycloidal

curves

Answer: A

A stainless steel is obtained principally by the use of the following alloying element.

A. chromiumB. tungstenC. carbonD. phenol

Answer: D

One of the following is not a common term relating to classification of fits.

A. tunkingB. snugC. medium force fitD. bound

Answer: B

Hearingbone gears are gears which:

A. do not operate on parallel shaftB. have a line of contact between the

teethC. consist of two left handed helical

gearsD. tend to produce thrust on the

shafts

Answer: A

Internal stresses existing in a welded connection:

A. are not relieve when the weld is peened

B. are not relieve by heat treatmentC. maybe relieved when the weld is

peenedD. are relieved by x-ray analysis

Answer: B

In general the design stress and factor of safety are related as follows:

A. Design stress = ultimate stress times factor of safety

B. Design stress = ultimate stress divided by factor of safety

C. Design stress = design stress divided by ultimate stress

D. Design stress = factor of safety divided by design stress

Answer: B

A group of thin steel strips for measuring clearances.

A. distortion gageB. feeler gageC. line center gageD. deflection gage

Answer: C

A hand tool used to measure tension on bolts.

A. indexerB. torsionmeterC. torque wrenchD. tensiometer

Answer: A

A material that can wear away a substance softer than itself.

A. abrasiveB. corrosiveC. tungstenD. alloy

Answer: A

The material used in high speed processes.

A. high-speed steelB. chromiumC. cast ironD. carbon steel

Answer: C

An alloy of copper and zinc.

A. chromiumB. bronzeC. brassD. aluminum

Answer: B

An alloy of copper, tin and small amount of phosphorous.

A. chromiumB. bronzeC. brassD. aluminum

Answer: C

The process of working metals by the application of sudden blows or by steady pressure.

A. welding B. extursionC. forgingD. swaging

Answer: A

A welding operation in which a non-ferrous filler metals melts at a temperature below that of the metal joined but is heated above 450oC.

A. brazingB. spot weldingC. gas weldingD. projection welding

Answer: C

The operation of cooling a heated piece of work rapidly by dipping it in water, brine or oil.

A. temperingB. annealingC. quenchingD. normalizing

Answer: A

A machine tool used to machine flat surfaces.

A. shaperB. planerC. grinderD. lathe