Heat Treatment and Machine Tools

2541 flashcardsby COSTALES,
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"Heating above the transformation range
usually 1300oF to 1350oF

A. annealing
B. hardening
C. normalizing
3
D. tempering"
Correct answer: C. normalizing
4
"Heating above the transformation temperature and quenching usually in oil
for the purpose of increasing the hardness

A. annealing
B. hardening
C. normalizing
5
D. tempering"
Correct answer: C. normalizing
6
"Reheating to temperature below the transformation range
followed by any desired rate of cooling to attain the desired properties of the metal.

A. annealing
B. hardening
C. normalizing
7
D. stress relieving"
Correct answer: D. stress relieving
8
"Heating to subcritical temperature
about 1100oF to 1300oF and holding at that temperature for a suitable time for the purpose of reducing internal residual stresses.

A. annealing
B. hardening
C. normalizing
9
D. stress relieving"
Correct answer: D. stress relieving
"Heating 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. annealing
B. hardening
C. normalizing
10
D. tempering"
Correct answer: C. normalizing
"A machine tool used for producing holes in metal by the use of cutting tool called drill.

A. drilling machine
B. boring machine
C. milling machine
11
D. broaching machine"
Correct answer: A. drilling machine
"A machine tool use to form metal parts by removing metal from a work piece By the use of a revolving cutter with many teeth each tooths having a cutting edge which removes its share of the stock.

A. drilling machine
B. boring machine
C. milling machine
12
D. broaching machine"
Correct answer: A. drilling machine
"A machine tool used to sharpen or shape tools by using an abrasive wheel.

A. tool grinder
B. shaper
C. planer
13
D. power saw"
Correct answer: A. tool grinder
"A machine tool used to enlarge a hole by means of an adjustable cutting tool with only one cutting edge.

A. drilling machine
B. boring machine
C. milling machine
14
D. broaching machine"
Correct answer: A. drilling machine
15
"A machine tool used to cut metal by parts of light
medium

A. tool grinder
B. shaper
C. planer
16
D. power saw"
Correct answer: A. tool grinder
"A machine tool used to machine flat or plane surfaces with a single point cutting tool.

A. tool grinder
B. shaper
C. planer
17
D. power saw"
Correct answer: A. tool grinder
"A machine tool used for production or flat surfaces on pieces too large or too heavy to hold in a shaper.

A. tool grinder
B. shaper
C. planer
18
D. power saw"
Correct answer: A. tool grinder
19
"A machine tool used to finish internal or external surfaces such as holes or keyways by the use of a cutter called broach
which has a series of cutting edges or teeth.

A. drilling machine
B. boring machine
C. milling machine
20
D. broaching machine"
Correct answer: A. drilling machine
"An alloy of copper and tin

A. brass
B. bronze
C. iron
21
D. tin"
Correct answer: B. bronze
"An alloy of copper and zinc

A. brass
B. bronze
C. iron
22
D. tin"
Correct answer: B. bronze
"The process of forming metal parts by the use of dies after the metal is heated to its plastic range

A. rolling
B. forging
C. turning
23
D. casting"
Correct answer: A. rolling
"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. rolling
B. forging
C. turning
24
D. casting"
Correct answer: A. rolling
"A manganese steel containing approximately 0.20% carbon

A. SAE 1320
B. SAE 1230
C. SAE 2340
25
D. SAE 4230"
Correct answer: A. SAE 1320
26
"A machine tool in which metal removed by means of a revolving cutter with many teeth
each tooth having a cutting edge which remove its share of the shock

A. milling machine
B. broaching machine
C. lathe machine
27
D. boring machine"
Correct answer: B. broaching machine
"A metal turning machine 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 machine
B. broaching machine
C. lathe machine
28
D. boring machine"
Correct answer: B. broaching machine
"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. shaper
B. planer
C. tool grinder
29
D. power saw"
Correct answer: C. tool grinder
"It consist of shaping a piece by bringing it into contact with a rotating abrasive wheel

A. drilling
B. boring
C. grinding
30
D. broaching"
Correct answer: C. grinding
"A tool used in measuring diameters

A. caliper
B. nanometer
C. tachometer
31
D. pyrometer"
Correct answer: A. caliper
32
"Used to true align machine tools
fixtures

A. dial gauge
B. dial indicator
C. tachometer
33
D. speedometer"
Correct answer: B. dial indicator
"The ability of the metal to be deformed considerably without rupture

A. ductility
B. plasticity
C. malleability
34
D. elasticity"
Correct answer: B. plasticity
35
"The shop term used to include the marking of inscribing of center points
circle

A. shaping
B. hobbing
C. laying out
36
D. shaping"
Correct answer: C. laying out
"An operation of sizing and finishing a hole by means of a cutting tool having several cutting edges

A. notching
B. piercing
C. turning
37
D. reaming"
Correct answer: D. reaming
38
"The operation of making a cone shaped enlargement of the end of a hole
as for a recess for a flat head screw

A. countersinking
B. knurling
C. squaring
39
D. perforating"
Correct answer: A. countersinking
"The operation of enlarging a hole by means of an adjustable cutting tool with only one cutting edge

A. drilling
B. broaching
C. grinding
40
D. boring"
Correct answer: C. grinding
"An imaginary circle passing through the points at which the teeth of the meshing gears contact each other

A. pitch circle
B. addendum circle
C. deddendum circle
41
D. base circle"
Correct answer: A. pitch circle
42
"A type of bolt for use in bolting wooden parts together or wood to metal
. It has a portion of shank just underneath a round head

A. u-bolt
B. carriage bolt
C. eye bolt
43
D. stud bolt"
Correct answer: B. carriage bolt
"The number of teeth per inch of pitch diameter and which gives some indications of the gear teeth

A. module
B. pitch circle
C. diametral pitch
44
D. circular pitch"
Correct answer: C. diametral pitch
"The distance from the center of one tooth of a gear the center of the next consecutive tooth measured of the pitch

A. circular pitch
B. module
C. diametral pitch
45
D. pitch circle"
Correct answer: C. diametral pitch
"The portion of the gear tooth that projects above or outside the pitch circle

A. top relief
B. deddendum
C. addendum
46
D. tooth space"
Correct answer: B. deddendum
"The portion of the gear tooth space that is cut below the pitch circle and is equal to the addendum plus the clearance

A. top root
B. deddendum
C. addendum
47
D. top land"
Correct answer: B. deddendum
"When meshed with a gear it is used to change rotary motion to reciprocating motion

A. gear shaft
B. gear tooth
C. gear rack
48
D. gear motor"
Correct answer: C. gear rack
"A kind of gears for heavy duty works where a large ratio of speed is required and are extensively used in speed reducers

A. bevel gear
B. worm gear
C. helical gear
49
D. spiral gear"
Correct answer: A. bevel gear
"A kind of gear to transmit motion from one shaft to another shaft at an angle to the first

A. bevel gear
B. worm gear
C. helical gear
50
D. spiral gear"
Correct answer: A. bevel gear
51
"The uniform heating of steel above the usual hardening temperatures
followed by cooling freely in air

A. annealing
B. normalizing
C. hardening
52
D. tempering"
Correct answer: B. normalizing
53
"The operation of cooling a heated piece of work rapidly by dipping it in water
brine or oil

A. quenching
B. tempering
C. normalizing
54
D. annealing"
Correct answer: C. normalizing
55
"A method 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. broaching
B. quenching
C. normalizing
56
D. annealing"
Correct answer: C. normalizing
"The total permissible variation in the size of a dimension the difference between the limits of size

A. allowance
B. tolerance
C. variance
57
D. interference"
Correct answer: B. tolerance
"The operation of machining the end of a work piece to make the end square with the axis

A. squaring
B. buffing
C. lapping
58
D. honing"
Correct answer: A. squaring
"The clearance between the tooth profiles of a gear tooth

A. toothspace
B. backslash
C. flank
59
D. width"
Correct answer: B. backslash
"A mechanism which usually do the indexing in a machine tool

A. slotter
B. chuck
C. dividing head
60
D. indexer"
Correct answer: C. dividing head
"A material that can wear away a substance softer than itself

A. phenol
B. abrasive
C. tungsten
61
D. chromium"
Correct answer: B. abrasive
62
"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. groove
B. lap
C. tap
63
D. flute"
Correct answer: C. tap
"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 gage
B. depth gage
C. line center gage
64
D. lay-out gage"
Correct answer: A. feeler gage
"A machine tool which is very similar to a shaper except that the ram reciprocates vertically rather than horizontally

A. Lathe
B. Grinder
C. Planer
65
D. Slotter"
Correct answer: D. Slotter
"A machine tool principally to machine flat or plane surfaces with single-point cutting tool

A. Grinder
B. Shaper
C. Planer
66
D. Turret machine"
Correct answer: B. Shaper
"A kind of bolts which has no head an instead has threads on both ends

A. Stud bolts
B. Acme threaded bolts
C. Square threaded bolts
67
D. Hex bolts"
Correct answer: A. Stud bolts
"A kind of chuck which has a reversible jaws which could be adjusted separately

A. Collet chuck
B. Independent chuck
68
C. Four jaw chuck"
Correct answer: B. Independent chuck
69
"A tool which when pressed into finished hole in a piece of work
provides centers on which the piece may be turned or otherwise machined

A. Mash
B. Butt
C. Mandrel
70
D. Wobble"
Correct answer: C. Mandrel
"A kind of chuck which should not used where extreme accuracy is required

A. Collet chuck
B. Magnetic chuck
C. Four jaw chuck
71
D. Universal chuck"
Correct answer: D. Universal chuck
"The process of checking or producing checkers on the surface of a piece by rolling checkered depression into the surface

A. Knurling
B. Hemming
C. Breading
72
D. Embossing"
Correct answer: A. Knurling
73
"Its fits the main spindle of a lathe and is so called because its acts as a bearing surface on which the work rest. It revolves with the work. When compared with the hardness of the dead center in the tailstock
is usually soft

A. Ram center
B. Spindle center
C. Live center
74
D. Bearing center"
Correct answer: C. Live center
"A gripping device with two or more adjustable jaws radially

A. Chuck
B. Carriage
C. Tailstock
75
D. Fan"
Correct answer: A. Chuck
"Steel Balls for ball bearings are manufactured by

A. Turning
B. Rolling
C. Casting
76
D. Cold heading"
Correct answer: C. Casting
"Addendum of a cycloidal gear tooth

A. Cycloid
B. Epicycloids
C. Straight rack
77
D. Involutes"
Correct answer: B. Epicycloids
78
"In a lathe
it comprises the main spindle

A. Headstock
B. Carriage
C. Tailstock
79
D. Fan"
Correct answer: A. Headstock
"The process of heating a piece of steel to a temperature within or above critical range and cooling rapidly

A. Normalizing
B. Hardening
C. Annealing
80
D. Tempering"
Correct answer: B. Hardening
"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 welding
B. Spot welding
C. Brazing
81
D. Steam welding"
Correct answer: C. Brazing
"Uniting two pieces of metal by means of a different metal which applied between the two in molten state

A. Casting
B. Welding
C. Soldering
82
D. Brazing"
Correct answer: C. Soldering
"Fusion process of metal by means is heated into a state of fusion permitting it to flow together into a solid joint

A. Electric arc welding
B. Gas welding
83
C. Spot welding"
Correct answer: A. Electric arc welding
84
"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 welding
B. Resistance welding
C. Steam welding
85
D. Gas welding"
Correct answer: B. Resistance welding
"A device for accurately measuring diameters

A. Radiometer
B. Profilometer
C. Spectrometer
86
D. Micrometer"
Correct answer: D. Micrometer
"A group of thin steel strips for measuring clearances

A. Distortion gage
B. Feeler gage
C. Line center gage
87
D. Deflection gage"
Correct answer: A. Distortion gage
"A hand tool used to measure engine crank web deflection

A. Distortion gage
B. Feeler gage
C. Line center gage
88
D. Deflection gage"
Correct answer: A. Distortion gage
"A hand tool used to measure tension on bolts

A. Indexer
B. Torque wrench
C. Torsionmeter
89
D. Tensionmeter"
Correct answer: B. Torque wrench
"The permissible variation in the size of a dimension the difference between the limits of size

A. Allowance
B. Variance
C. Clearance
90
D. Tolerance"
Correct answer: D. Tolerance
"A gear with teeth on the outer cylindrical surface

A. Outer gear
B. External gear
C. Spiral gear
91
D. Helical gear"
Correct answer: B. External gear
"The diameter of a circle coinciding with the top of the teeth of an internal gear

A. Pitch diameter
B. Root diameter
C. Internal diameter
92
D. Central diameter"
Correct answer: C. Internal diameter
"A circle coinciding with a tangent to the bottom of the tooth space

A. Root circle
B. Pitch circle
C. Addendum circle
93
D. Deddendum circle"
Correct answer: A. Root circle
94
"The total depth of a tooth space
equal to addendum plus deddendum

A. Full depth
B. Working depth
C. Whole depth
95
D. Deddendum"
Correct answer: C. Whole depth
"The depth of tooth space below the pitch circle

A. Deddendum
B. Working depth
C. Full depth
96
D. Tooth depth"
Correct answer: A. Deddendum
"The ________ of gear to each mm pitch diameter

A. Diametral pitch
B. Module
C. Circular pitch
97
D. English module"
Correct answer: A. Diametral pitch
"A machine tool in which abrasive wheel is used as cutting tool obtain a very smooth finish

A. Drill
B. Grinder
C. Planer
98
D. Shaper"
Correct answer: B. Grinder
"It is used to produce a variety of surfaces by using a circular type cutter with multiple teeth

A. Grinding machine
B. Shaper
C. Drilling machine
99
D. Milling machine"
Correct answer: D. Milling machine
"It is used principally to machine flat or plane surfaces with single point tool

A. Drill
B. Shaper
C. Planer
100
D. Grinder"
Correct answer: D. Grinder
"Cutting a hole by means of rotating tool or the work may revolve and to the tool remain fixed as in the lathe

A. Piecing
B. Notching
C. Boring
101
D. Perforating"
Correct answer: C. Boring
"One of the following is not a tap used for cutting threads in holes

A. Tapping tap
B. Plug tap
C. Taper tap
102
D. Bottoming tap"
Correct answer: A. Tapping tap
"An index or dividing head

A. A part of drill press
B. Used to rotate work
C. Not used to cut helixes
103
D. Always manually operated"
Correct answer: B. Used to rotate work
"Galvanized iron is a term referring to iron coated with

A. Tin
B. Zinc
C. Magnesium
104
D. Aluminum"
Correct answer: C. Magnesium
"The moment of inertia of a rectangle whose base is “b” and height “h” about its base is

A. bh3/12
B. bh/46
C. bh3/3
105
D. bh2/4"
Correct answer: C. bh3/3
"In usual spur gearing

A. The pitch circle and the base are the same
B. Working depth includes the clearance
C. Tooth outline are usually involute curves
106
D. Tooth outline are always cycloidal curves"
Correct answer: C. Tooth outline are usually involute curves
"A stainless steel is obtained principally by the use of the following alloying element

A. Chromium
B. Tungsten
C. Carbon
107
D. Phenol"
Correct answer: A. Chromium
"One of the following is not a common term relating to the classification of fits

A. Tunking
B. Snug
C. Medium force fit
108
D. Bound"
Correct answer: D. Bound
"Hearing bone Gears are gears which

A. Do not operate on parallel shaft
B. Have a line contact between teeth
C. Consist of two left handed helical gears
109
D. Tend to produce thrust on the shafts"
Correct answer: B. Have a line contact between teeth
"Internal stresses existing in a welded connection

A. Are not relieved when the weld is peened
B. Are not relieved by heat treatment
C. May be relieved when the weld is peened
110
D. Are relieved by x-ray analysis"
Correct answer: A. Are not relieved when the weld is peened
"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 factor of safety
111
D. Design stress= factor of safety divided by design stress"
Correct answer: A. Design stress=ultimate stress times factor of safety
"A group of thin steel strips for measuring clearance

A. Depth cut
B. Feeler gage
C. Lay-out gage
112
D. Clearance gage"
Correct answer: B. Feeler gage
"A hand tool used to measure tension on bolts

A. Indexer
B. Torsion meter
C. Torque wrench
113
D. Tension meter"
Correct answer: C. Torque wrench
"A material that can wear away a substance softer than itself

A. Abrasive
B. Corrosive
C. Tungsten
114
D. Alloy"
Correct answer: A. Abrasive
"The material used in high speed processes

A. High speed steel
B. Chromium
C. Cast iron
115
D. Carbon steel"
Correct answer: A. High speed steel
"An alloy of copper and zinc

A. Chromium
B. Bronze
C. Brass
116
D. Aluminum"
Correct answer: A. Chromium
117
"An alloy of copper
tin

A. Chromium
B. Bronze
C. Brass
118
D. Aluminum"
Correct answer: A. Chromium
"The process of working metals by the application of sudden blows or by steady pressure

A. Welding
B. Extrusion
C. Forging
119
D. Swaging"
Correct answer: C. Forging
"A 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. Brazing
B. Spot welding
C. Gas welding
120
D. Projection welding"
Correct answer: A. Brazing
121
"The operation of cooling a heated piece of work rapidly by dipping it in water
brine

A. Tempering
B. Annealing
C. Quenching
122
D. Normalizing"
Correct answer: C. Quenching
"A machine tool used to machine flat surfaces

A. Shaper
B. Planer
C. Grinder
123
D. Lathe"
Correct answer: C. Grinder
"A machine tool in which an abrasive wheel is used a cutting to obtain a very smooth finish.

A. planer
B. shaper
C. power saw
124
D. grinder"
Correct answer: D. grinder
"It is used to produce a variety of surfaces by using a circular type cutter with a multiple teeth.

A. milling machine
B. broaching machine
C. beading machine
125
D. hemming machine"
Correct answer: A. milling machine
"A heavy rotating body which serves as reservoir for absorbing and redisturbing kinetic energy.

A. Shaft
B. Governor
C. Flywheel
126
D. Puncher"
Correct answer: C. Flywheel
"A kind of gear used for heavy duty works where a large ratio of speed is required and is extensively used in speed reducers.

A. Helical gear
B. Worm gear
C. Bevel gear
127
D. Spiral gear"
Correct answer: C. Bevel gear
"A kind of gear used to transmit motion from one shaft to another shaft at angle to the first.

A. Helical gear
B. Worm gear
C. Bevel gear
128
D. Spiral gear"
Correct answer: C. Bevel gear
"The minimum thickness to steel members exposed to weather and accessible for painting is:

A. 6mm
B. 8mm
C. 4mm
129
D. 10mm"
Correct answer: D. 10mm
130
"The common deoxidizer and cleanser of steel
forming oxides and sulfates that are carried off in the slag.

A. Manganese
B. Carbon
C. Tungsten
131
D. Sulfur"
Correct answer: A. Manganese
"A highly transparent and exceeding hard crystalline stone of almost pure carbon.

A. Gold
B. Diamond
C. Bronze
132
D. Crystalline"
Correct answer: C. Bronze
133
"A fine grained
salty silica rock used for sharpening edge tools.

A. Eutectoid
B. Austenite
C. Oilstone
134
D. Pearlite"
Correct answer: C. Oilstone
"An amorphous solid made by using silica with a basic oxide.

A. Pearlite
B. Rock
C. Silicon
135
D. Glass"
Correct answer: D. Glass
136
"A soft yellow metal
known since ancient times a precious metal which values are based.

A. Solidus
B. Bronze
C. Gold
137
D. Austenite"
Correct answer: B. Bronze
138
"The operation of cooling a heated piece of work rapidly by dropping it in water
brine or oil.

A. Normalizing
B. Quenching
C. Annealing
139
D. Squeezing"
Correct answer: B. Quenching
"A device used to prevent leakage of media.

A. Seal
B. Packing
C. Teflon
140
D. Graphite"
Correct answer: A. Seal
"A 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. Arc welding
B. Brazing
C. Spot welding
141
D. Butt welding"
Correct answer: B. Brazing
"The process of working metals by the application of sudden blows r by a steady pressure.

A. Trimming
B. Welding
C. Forging
142
D. Lancing"
Correct answer: C. Forging
"The process of producing a variety of surface by using a circular type cutter with multiple teeth.

A. Piercing
B. Cutting
C. Embossing
143
D. Milling"
Correct answer: D. Milling
"The softening of meals by heat treatment and most commonly consists of heating the metals up to near molten state cooling them very slowly.

A. Quenching
B. Tempering
C. Annealing
144
D. Forming"
Correct answer: A. Quenching
"The maximum stress induced in a material when subjected to alternating or repeated loading without causing failure.

A. Elastic limit
B. Proportional limit
C. Rupture strength
145
D. Endurance limit"
Correct answer: D. Endurance limit
"The total deformation measured in the direction of the line of stress.

A. Axial deformation
B. Elongation
C. Strain
146
D. Unit stress"
Correct answer: C. Strain
"The maximum stress to which a material can be subjected without a trace of any permanent set remaining upon a complete withdrawal of the stress.

A. Ultimate limit
B. Proportional limit
C. Endurance limit
147
D. Elastic limit"
Correct answer: C. Endurance limit
"The total permissible variation in the size of a dimension; the difference between the limits of the size.

A. Deformation
B. Variance
C. Tolerance
148
D. Allowance"
Correct answer: C. Tolerance
"Fluid film desired between two surfaces having relative sliding motion.

A. Lube oil
B. Lubrication
C. Graphite
149
D. Grease"
Correct answer: B. Lubrication
150
"Flexible materials used to seal pressurized fluids
normally under dynamic conditions.

A. Packing
B. Teflon
C. Seals
151
D. Safety shield"
Correct answer: A. Packing
"A total resistance that a material offers to an applied load.

A. Flexure
B. Stress
C. Elasticity
152
D. Rigidly"
Correct answer: B. Stress
"A property of material which relates the lateral strains to the longitudinal strain.

A. Rigidity
B. Elasticity
C. Poisson’s ratio
153
D. Deflection"
Correct answer: C. Poisson’s ratio
"A kind of gear used for heavy duty works where a large ratio of speed is required and is extensively used in speed reducers.]

A. Spiral gear
B. Bevel gear
C. Worm gear
154
D. Helical gear"
Correct answer: B. Bevel gear
"A kind of gear used to transmit motion from one shaft to another shaft at an angle to the first.

A. Spiral gear
B. Worm gear
C. Helical gear
155
D. Bevel gear"
Correct answer: D. Bevel gear
"Which of the following is not a classification of iron ore?

A. Hematite
B. Magnetite
C. Sulfurite
156
D. Siderite"
Correct answer: C. Sulfurite
"Which of the following metals will respond to heat treatment?

A. Cast iron
B. Medium carbon steel
C. Wrought iron
157
D. Low carbon steel"
Correct answer: B. Medium carbon steel
"Which of the following is a non-magnetic?

A. Cast iron
B. Alloy steel
C. Cast steel
158
D. Manganese steel"
Correct answer: D. Manganese steel
"The ability of metal to withstand without breaking down is:

A. Stress
B. Strength
C. Strain
159
D. Elasticity"
Correct answer: B. Strength
"A machining operation whereby the tool reciprocates and the feed is stationary is called:

A. Shaping
B. Reaming
C. Planning
160
D. Turning"
Correct answer: D. Turning
"Any material that retards the flow of electricity used to prevent passage or escape of electric current from conductors.

A. Insulators
B. Bricks
C. Ceramics
161
D. Refractories"
Correct answer: D. Refractories
"A metallic element and the only metal that is liquid at ordinary temperature.

A. Austenite
B. Mercury
C. Manganese
162
D. Martensite"
Correct answer: B. Mercury
"An alloy of cooper and zinc.

A. Aluminum
B. Bronze
C. Brass
163
D. Nickel"
Correct answer: B. Bronze
"Usually a copper- tin alloy is:

A. Aluminum
B. Nickel
C. Brass
164
D. Bronze"
Correct answer: D. Bronze
"A tool with hardened points used for scribing circles or laying of distances.

A. Trammel
B. Caliper
C. Divider
165
D. Micrometer"
Correct answer: C. Divider
"Name of mechanism which a welding operator holds during gas welding and at the end of which the gases are burned to perform the various gas welding operations.

A. Mash
B. Core
C. Wobble
166
D. Torch"
Correct answer: D. Torch
"The maximum stress to which a material may be subjected before failure occurs.

A. Rupture stress
B. Yield stress
C. Ultimate stress
167
D. Allowable stress"
Correct answer: C. Ultimate stress
"The maximum stress induced in a material when subjected to alternate or repeated loading without causing failure.

A. Yield point
B. Ultimate point
C. Endurance point
168
D. Proportional point"
Correct answer: C. Endurance point
"Which of the following is not a classification of iron ore?

A. Hematite
B. Magnetic
C. Sulfurite
169
D. Siderite"
Correct answer: C. Sulfurite
170
"Of the following metals
which will respond to heat treatment?

A. Cast iron
B. Wrought iron
C. Medium iron
171
D. Low carbon iron"
Correct answer: C. Medium iron
172
"Materials
usually ceramics

A. Refractories
B. Gaskets
C. Insulators
173
D. Safety shield"
Correct answer: A. Refractories
"The softening of metals by heat treatment and most commonly consists of heating the metals up to near molten state and then cooling them very slowly.

A. Annealing
B. Hardening
C. Normalizing
174
D. Tempering"
Correct answer: A. Annealing
"The process of producing of variety of surfaces by using a circular type cutter with multiple teeth.

A. Milling
B. Drilling
C. Broaching
175
D. Boring"
Correct answer: A. Milling
"The process of working metals by the application of sudden blows or by steady pressure.

A. Rolling
B. Forging
C. Castling
176
D. Turning"
Correct answer: A. Rolling
"A welding operation in which a non-ferrous filler metal melts at a temperature below that of the metal joined but is heated 450oC.

A. Spot welding
B. Gas welding
C. Brazing
177
D. Arc welding"
Correct answer: C. Brazing
178
"The operation of cooling heated piece of work rapid by dropping it in water
brine or oil.

A. Quenching
B. Tempering
C. Annealing
179
D. Normalizing"
Correct answer: C. Annealing
180
"A machine tool in which an abrasive wheel is used as a cutting tool to obtain a very degree of accuracy and a smooth finish on metal parts
including soft and hardened steel.

A. Grinding machine
B. Broaching machine
C. Milling machine
181
D. Boring machine"
Correct answer: A. Grinding machine
"A machine tool used principally to machine flat or place surfaces with a single point cutting tool.

A. Shaper
B. Planer
C. Grinder
182
D. Broaching machine"
Correct answer: A. Shaper
"A tool used for measuring diameters.

A. Micrometer
B. Tachometer
C. Pyrometer
183
D. Caliper"
Correct answer: D. Caliper
"The total permissible variation in the size of a dimension; the difference between the limits of the size.

A. Tolerance
B. Fits
C. Allowance
184
D. Clearance"
Correct answer: A. Tolerance
"The maximum stress to which a material can be subjected without a trace of any permanent set remaining upon a complete withdrawal of the stress.

A. Ultimate stress
B. Rupture stress
C. Elastic limit
185
D. Proportional limit"
Correct answer: C. Elastic limit
"Fluid film desired between two surfaces having relative sliding motion.

A. Lubrication
B. Seal
C. Packing
186
D. Safety shield"
Correct answer: A. Lubrication
"A total deformation measured in the direction of the line of stress.

A. Stress
B. Strain
C. Endurance limit
187
D. Poisson’s ratio"
Correct answer: D. Poisson’s ratio
"A kind of gear for heavy duty works where a large ratio of speed is required and is extensively used in speed reducers.

A. Worm gear
B. Spiral gear
C. Helical gear
188
D. Bevel gear"
Correct answer: D. Bevel gear
"A kind of gear used to transmit motion from one shaft to another shaft at an angle to the first.

A. Worm gear
B. Spiral gear
C. Helical gear
189
D. Bevel gear"
Correct answer: D. Bevel gear
"The area of a machine shop where metal is being melted to form a new shape is:

A. Welding area
B. Mass production area
C. Foundry area
190
D. Tool and die"
Correct answer: C. Foundry area
"A machine used in shaping metal by means of abrasive wheel or removal metals with an abrasive is called:

A. Planer
B. Power saw
C. Shaper
191
D. Grinding machine"
Correct answer: D. Grinding machine
"The ability of materials or metal to resist being crushed is:

A. Compressive strength
B. Fatigue strength
C. Torsional strength
192
D. Bending strength"
Correct answer: A. Compressive strength
"A machining operation whereby the tool rotates while the feed is stationary.

A. Shaping
B. Milling
C. Turning
193
D. Reaming"
Correct answer: B. Milling
"A machining operation whereby the tool reciprocates and the feed is stationary.

A. Reaming
B. Planning
C. Shaping
194
D. Turning"
Correct answer: C. Shaping
"Which of the following metals is easy to chisel?

A. Alloy steel
B. Stainless steel
C. Manganese steel
195
D. Cast iron steel"
Correct answer: C. Manganese steel
"Ferrous metals contain relatively large amount of:

A. Carbon
B. Manganese
C. Phosphorous
196
D. Sulfur"
Correct answer: A. Carbon
"Which of the following is not a strength property of metals?

A. Tensile strength
B. Rocking strength
C. Fatigue strength
197
D. Torsional strength"
Correct answer: B. Rocking strength
"Which of the following is not a kind of mandrel?

A. Expansion mandrel
B. Contraction mandrel
C. Taper mandrel
198
D. Gang mandrel"
Correct answer: B. Contraction mandrel
"Which of the following is not a part of lathe machine?

A. Tailstock
B. Headstock
C. Carriage
199
D. Fan"
Correct answer: D. Fan
200
"The range of motors power in kW of a universal milling machine
max feed movement 1270 mm lengthwise

A. 11 to 15 kW
B. 16 to 21 kW
C. 7.5 to 10 kW
201
D. 22 to 30 kW"
Correct answer: D. 22 to 30 kW
202
"The motor power in kW of a punch press
50.8 mm hole diameter

A. 15kW
B. 21 kW
C. 7.5 kW
203
D. 30 kW"
Correct answer: A. 15kW
204
"The range of motor power in kW of a cylindrical grinding machine 600 x 50 mm wheel size
2

A. 11 to 15 kW
B. 16 to 21 kW
C. 7.5 kW
205
D. 22 to 30 kW"
Correct answer: D. 22 to 30 kW
206
"The motor power in kW of a forming r bending machine 1600 mm width
508 mm head movement is:

A. 7.5 kW
B. 11 kW
C. 15 kW
207
D. 22 kW"
Correct answer: C. 15 kW
208
"The range of motor power in kW of an Engine lathe machine
average service 1000 mm to 13000 mm swing.

A. 11 to 15 kW
B. 7.5 to 10 kW
C. 16 to 21 kW
209
D. 22 to 30 kW"
Correct answer: D. 22 to 30 kW
210
"A machine which can flatten surfaces on a horizontal
vertical or angular plane.

A. Shaper
B. Planer
C. Power saw
211
D. Tool grinder"
Correct answer: D. Tool grinder
"The ability of metal to withstand forces thus following a number of twists.

A. Shear strength
B. Bearing strength
C. Endurance limit
212
D. Deformation"
Correct answer: A. Shear strength
"A property of material which relates the lateral strain to the longitudinal strain.

A. Stress
B. Modulus of elasticity
C. Poisson’s ratio
213
D. Deformation"
Correct answer: C. Poisson’s ratio
"A total resistance that a material offers to an applied load.

A. Friction force
B. Stress
C. Rigidity
214
D. Compressive force"
Correct answer: C. Rigidity
"A total deformation measured in the direction of the line of stress.

A. Strain
B. Elasticity
C. Elongation
215
D. Contraction"
Correct answer: A. Strain
"An alloy of copper and zinc.

A. Aluminum
B. Brass
C. Bronze
216
D. Chromium"
Correct answer: D. Chromium
"A metallic element of copper-tin alloy.

A. Aluminum
B. Brass
C. Bronze
217
D. Chromium"
Correct answer: D. Chromium
"A metallic element and only metal that is liquid at ordinary temperature.

A. Aluminum
B. Mercury
C. Zirconium
218
D. Zinc"
Correct answer: B. Mercury
219
"Any material that retard the flow of electricity
used to prevent passage or escape of electric current from conductors.

A. Refractory
B. Ceramics
C. Coating materials
220
D. Insulation"
Correct answer: D. Insulation
"The maximum stress to which a material may be subjected before failure occurs.

A. rupture strength
B. ultimate strength
C. yield strength
221
D. proportional limit"
Correct answer: B. ultimate strength
"The maximum stress induced in a material when subjected to alternating repeated loading without causing failure.

A. ultimate strength
B. yield strength
C. endurance strength
222
D. rupture strength"
Correct answer: A. ultimate strength
"Fluid film desired between two surfaces having relatively sliding motion.

A. lube oil
B. graphite
C. packing
223
D. lubrication"
Correct answer: D. lubrication
"The ability of material to withstand loads without breaking down

A. Strength
B. Elasticity
224
C. Rigidity"
Correct answer: C. Rigidity
225
"Materials usually ceramics
employed where resistance to very high temperature is required as furnace lining and metal melting pots.

A. Insulators
B. Gaskets
C. Packing
226
D. Refractories"
Correct answer: D. Refractories
"An allying element used principally to produce stainless steel.

A. aluminum
B. brass
C. bronze
227
D. chromium"
Correct answer: D. chromium
"A coating material used to produce galvanized iron.

A. Zirconium
B. Zinc
C. Aluminum
228
D. Chromium"
Correct answer: D. Chromium
"A group of thin steel strips used for measuring clearance.

A. feeler gage
B. tachometer
C. micrometer
229
D. caliper"
Correct answer: A. feeler gage
"A hand tool used to measure tension in bolts.

A. torque wrench
B. tachometer
C. shaver
230
D. sensor"
Correct answer: A. torque wrench
"Ratio of pitch diameter to the number of teeth.

A. diametrical pitch
B. module
C. contact ratio
231
D. helical overlap"
Correct answer: B. module
"A circle the radius of which is equal to the distance from the gear axis to the pitch point.

A. pitch circle
B. root circle
C. base circle
232
D. outside circle"
Correct answer: A. pitch circle
"A circle coinciding with a tangent to the bottom of the tooth spaces.

A. pitch circle
B. root circle
C. base circle
233
D. outside circle"
Correct answer: A. pitch circle
"The method of cold working by compression.

A. Broaching
B. Lapping
C. Piercing
234
D. Reaming"
Correct answer: C. Piercing
235
"A machine tool used finish internal and external surfaces by the use of cutter called a broach
which has a series of cutting edges or teeth.

A. lathe machine
B. broaching machine
C. planer
236
D. shaper"
Correct answer: B. broaching machine
"A cutting tool which is made to move slowly while acting on the work which is revolving on a horizontal axis.

A. lathe machine
B. broaching machine
C. planer
237
D. shaper"
Correct answer: B. broaching machine
"A machine tool used to produce a variety of surfaces by using circular type cutter with multiple teeth.

A. lathe machine
B. milling machine
C. broaching machine
238
D. grinding machine"
Correct answer: C. broaching machine
"Used in the production of flat surfaces on pieces too large or too heavy to hold in a shaper.

A. Planer
B. Shaper
C. Grinder
239
D. Shaver"
Correct answer: A. Planer
"Used to machine flat or curved surfaces with a tool which moves in a reciprocating motion.

A. planer
B. shaper
C. grinder
240
D. lathe"
Correct answer: A. planer
"Which of the following materials that can wear away a substance softer than itself

A. Abrasive
B. Tungsten
C. Carbon
241
D. corrosive"
Correct answer: A. Abrasive
"A tool with hardened steel points used for scribing or lying of distances.

A. Plain scriber
B. divider
C. a trammel
242
D. hermaphrodite"
Correct answer: B. divider
"A machine tool used principally to machine flat or plane surfaces with a single pointed tool.

A. Shaper
B. Planer
C. Drill
243
D. Power saw"
Correct answer: B. Planer
"A machine tool in which an abrasive wheel is used as cutting tool to obtained a very smooth finish.

A. Broaching machine
B. Planer
C. Tool grinder
244
D. Milling machine"
Correct answer: A. Broaching machine
"The process of working metals by the application of sudden blows or by steady pressure.

A. Casting
B. Turning
C. Forging
245
D. Rolling"
Correct answer: C. Forging
246
"The operation of cooling a heated piece of work rapidly by dipping it water
brine or oil

A. Quenching
B. Annealing
C. Tempering
247
D. Normalizing"
Correct answer: A. Quenching
"The softening of metals by heat treatment and most commonly consists of heating the metal up to near molten state and then cooling it very slowly.

A. Annealing
B. Indexing
C. Knurling
248
D. Soldering"
Correct answer: A. Annealing
"A fluid film desired between surfaces relative sliding motion.

A. Lube oil
B. Lubrication
C. Grease
249
D. Graphite"
Correct answer: B. Lubrication
"A kind of gear used to transmit motion from one shaft to another shaft at an angle to the first.

A. Worm gear
B. Bevel gear
C. Helical gear
250
D. Spur gear"
Correct answer: B. Bevel gear
"The principal material used in high production metal working tools.

A. Hyper- Eutectoid
B. High speed steel
C. Lead
251
D. High speed carbon"
Correct answer: B. High speed steel
"A heavy rotating body which serves as a reservoir for absorbing and redistributing kinetic energy.

A. Flywheel
B. governor
C. shaft
252
D. puncher"
Correct answer: A. Flywheel
"A machine used in shaping metal by means of an abrasive wheel or the removal of metals with an abrasive is called:

A. Planer machine
B. Power saw
C. Shaper machine
253
D. Grinding machine"
Correct answer: D. Grinding machine
"Which of the following is not a part of lathe machine?

A. Tailstock
B. Fan
C. Carriage
254
D. headstock"
Correct answer: B. Fan
"Which of the following is easy to chisel?

A. Cast iron
B. Alloy steel
C. Cast steel
255
D. Manganese steel"
Correct answer: D. Manganese steel
"A machining operation whereby the tool reciprocates and the feed is stationary is called:

A. Shaping
B. Reaming
C. Planning
256
D. Turning"
Correct answer: A. Shaping
"Which of the following is not a kind of mandrel?

A. Expansion mandrel
B. Taper mandrel
C. Contraction mandrel
257
D. Foundry mandrel"
Correct answer: C. Contraction mandrel
"The area of the machine shop where the metal is being melted to form a new shape.

A. Welding area
B. Mass production area
C. Foundry area
258
D. Tool and die area"
Correct answer: C. Foundry area
"Which of the following is not used to temper steel?

A. Brine salt bath
B. Oil bath
C. Water bath
259
D. Steam bath"
Correct answer: D. Steam bath
"Which of the following is not a kind of cast iron?

A. Malleable iron
B. Head iron
C. Gray iron
260
D. White iron"
Correct answer: B. Head iron
"The kind of center which is being attached and meshed to the tailstock spindle which is also static while the work is rotating:

A. Dead center
B. Live center
C. Focal center
261
D. Work center"
Correct answer: A. Dead center
"Which of the following is not part of the headstock?

A. Spindle
B. Anvil
C. Back gear
262
D. Motor"
Correct answer: B. Anvil
"Which process does not belong to the group?

A. Vise grip
B. Adjustable wrench
C. Torque wrench
263
D. Feeler gage"
Correct answer: D. Feeler gage
"Which does not belong to the group?

A. Resistance welding
B. Soldering
C. Hardening
264
D. Brazing"
Correct answer: C. Hardening
265
"Substances having sufficient carbon and /or hydrogen for chemical oxidation to produce exothermally
worthwhile quantities of heat.

A. Lubrication
B. Graphite
C. Grease
266
D. Fuels"
Correct answer: A. Lubrication
"A device that measures atmospheric pressure.

A. Piezometer
B. Hydrometer
C. Barometer
267
D. Odometer"
Correct answer: C. Barometer
"The mass of the body per unit of volume.

A. Volume flow rate
B. Density
C. Weight
268
D. Mass"
Correct answer: B. Density
269
"Subjecting a substance to a high temperature below the fusion point
usually to make it friable.

A. Calcinations
B. Fusion
C. Boiling
270
D. Superheating"
Correct answer: A. Calcinations
"Special metal formed when to or more metals are melted together.

A. Monel
B. Alloy
C. Solder
271
D. Hastalloy"
Correct answer: B. Alloy
"The ability of a moving body to perform work.

A. Internal energy
B. Potential energy
C. Kinetic energy
272
D. Flow work"
Correct answer: C. Kinetic energy
"Hardening the surface of iron- based alloys by heating them below the melting point in contact with a carbonaceous substance.

A. Carburizing
B. Normalizing
C. Mar tempering
273
D. Hardening"
Correct answer: A. Carburizing
"Any materials that retard the flow electricity used to prevent or escaped of electric current from conductors.

A. Bricks
B. Insulators
C. Refractories
274
D. Ceramics"
Correct answer: C. Refractories
275
"Material
usually ceramics

A. Bricks
B. Insulators
C. Refractories
276
D. ceramics"
Correct answer: C. Refractories
"A device used to prevent leakage of media.

A. Packing
B. Safety shield
C. Gasket
277
D. Seals"
Correct answer: D. Seals
"The internal resistance a material offers to being deformed and is measured in terms of applied load.

A. Strain
B. Elasticity
C. Stress
278
D. Resilience"
Correct answer: B. Elasticity
"The deformation that results from a stress and is expressed in terms of the amount of deformation per inch.

A. Elongation
B. Strain
C. Poisson’ s ratio
279
D. Elasticity"
Correct answer: D. Elasticity
"The ability of the material to return to its original shape after being elongated or distorted when the forces are released.

A. Elasticity
B. Brittleness
C. Plasticity
280
D. Creep"
Correct answer: A. Elasticity
"The last point at which a material may be stretched and still return to its unreformed condition upon release of the stress.

A. Rupture limit
B. Elastic limit
C. Proportional limit
281
D. Ultimate limit"
Correct answer: B. Elastic limit
"The ratio of stress to strain within the elastic limit.

A. Creep
B. Modulus of rigidity
C. Modulus of elasticity
282
D. Poisson’s ratio"
Correct answer: C. Modulus of elasticity
"The ability of a metal to withstand forces that causes a member to twist.

A. Shear strength
B. Tensile strength
C. Bearing strength
283
D. Torsional strength"
Correct answer: D. Torsional strength
"The ability of a material to resist being crushed.

A. Tensile strength
B. Shearing strength
C. Compressive strength
284
D. Torsion"
Correct answer: C. Compressive strength
285
"The ability of metal to stretch
bend or twist without breaking or cracking.

A. Elasticity
B. Ductility
C. Brittleness
286
D. plasticity"
Correct answer: B. Ductility
"The property of a material which resist forces action to pull the material apart.

A. Shear strength
B. Tensile strength
C. Compressive strength
287
D. Bearing strength"
Correct answer: C. Compressive strength
"The property of steel which resist indention or penetration.

A. Hardness
B. Elasticity
C. Ductility
288
D. None of these"
Correct answer: C. Ductility
289
"In the color coding of pipe
the color for a pipeline of air is:

A. Light blue
B. Light orange
C. White
290
D. Green"
Correct answer: B. Light orange
291
"In the color coding of pipe
the color for a pipeline of water is:

A. Light blue
B. Green
C. Brown
292
D. Silver grey"
Correct answer: D. Silver grey
293
"In the color coding of pipe
the color for a pipeline of steam is:

A. Light orange
B. White
C. Silver grey
294
D. Light blue"
Correct answer: A. Light orange
"The color for a pipeline of electricity in the color coding of pipe is:

A. Light orange
B. White
C. Silver grey
295
D. Light blue"
Correct answer: A. Light orange
296
"In the color coding of pipe
the color for a pipeline of communication is:

A. Light blue
B. White
C. Brown
297
D. Light orange"
Correct answer: D. Light orange
"The color pipeline of fuel oil in the color coding of pipe is:

A. Light blue
B. Brown
C. White
298
D. Light orange"
Correct answer: D. Light orange
"For high speed application the minimum number of teeth in small sprocket should be:

A. 18 to 24
B. 26 to 30
C. 14 to 18
299
D. 24 to 28"
Correct answer: A. 18 to 24
"The good deoxidizer in steel melting is:

A. Manganese
B. Aluminum
C. Silicon
300
D. All of these"
Correct answer: D. All of these

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