1
Q
- Metal that assists lubrication or lubricant in itself.
A. Zinc
B. Antimony
C. Babbitt
D. Lead
A
C. Babbitt
2
Q
- The smallest area at a point of rupture of a tensile specimen divided by the original area is called:
A. Percentage elongation
B. Izod test
C. Charpy test
D. Percentage reduction of the area
A
D. Percentage reduction of the area
3
Q
- All are associated with then grade of steel except:
A. SAE 43xx
B. SAE 13xx
C. SAE 10xx
D. SAE 74xx
A
D. SAE 74xx
4
Q
- Cold working of steel plates make the metal:
A. Tougher
B. More detail
C. Harder
D. More malleable
A
C. Harder
5
Q
- The property that characterizes the material’s ability to be drawn into a wire is called:
A. Ductility
B. Thermal conductivity
C. Tensile strength
D. Endurance limit
A
A. Ductility
6
Q
- Normal stress relieving temperature for cast steel is:
A. 200 to 3500F
B. 400 to 5000F
C. 300 to 4000F
D. 450 to 5500F
A
D. 450 to 5500F
7
Q
- Most effective alloying element for reducing brittleness of steel at very low temperature.
A. Manganese
B. Molybdenum
C. Silicon
D. Nickel
A
D. Nickel
8
Q
- Ordinary steel begins to lose strength and elasticity significantly of about what temperature?
A. 900 – 10000F
B. 800 – 9000F
C. 700 – 8500F
D. 600 – 7000F
A
D. 600 – 7000F
9
Q
- For a high corrosion resistant stainless steel, what minimum chromium content is required?
A. 8%
B. 4.3%
C. 1.1%
D. 5.8%
A
A. 8%
10
Q
- A material that should be avoided in constructing wood pattern is:
A. Sap wood
B. Kiln dried wood
C. Heart wood
D. Core portion of wood
A
A. Sap wood
11
Q
- Hacksaw blades are made of what materials?
A. Tool steel
B. Tungsten alloy steel
C. High-speed steel
D. Any of these
A
D. Any of these
12
Q
- A hacksaw blade with 24 TPI is best suitable for cutting which of the following materials?
A. Tubing
B. Brass and copper
C. Sheet metal over 18 gage
D. Any of these
A
D. Any of these
13
Q
- Which of the following is a “must” for all hard hacksaw blades?
A. It has a hard back and flexible teeth
B. It has flexible back and hard teeth
C. It has the entire blade hardened
D. It will only fit solid frame hacksaw
A
C. It has the entire blade hardened
14
Q
- In how many positions can a hacksaw blade be placed in a frame?
A. Two positions
B. One position
C. Four positions
D. Three positions
A
C. Four positions
15
Q
- Files are divided into two general classes. How are these classified?
A. Rough and smooth
B. Single-cut and double cut
C. Large and small
D. Flat shapes and round shapes
A
B. Single-cut and double cut
16
Q
- The term “set” of a saw best defines what?
A. To set properly in the frame
B. Alternate teeth are turned slightly to left and right to make cutting slot slightly wider than the thickness of the thickness of the blade
C. The teeth have been case-hardened for better cutting
D. The teeth are set evenly apart
A
B. Alternate teeth are turned slightly to left and right to make cutting slot slightly wider than the thickness of the thickness of the blade
17
Q
- All hard hacksaw blade is best suited for work on which of the following?
A. Brass
B. Cast iron
C. Tool steel
D. Any of these
A
D. Any of these
18
Q
- Which of the following is the best instrument for measuring thousandths of an inch?
A. Caliper
B. Micrometer
C. Tachometer
D. Pyrometer
A
B. Micrometer
19
Q
- A hacksaw blade with 34 teeth per inch should be used for cutting which of the following materials?
A. Brass
B. Heavy stock
C. Cast iron
D. Thin wall tubing
A
D. Thin wall tubing
20
Q
- How is the hacksaw blade should be placed in the frame?
A. The teeth pointing forward
B. The teeth pointing backward
C. One end looser than the other end
D. The teeth facing in any direction
A
A. The teeth pointing forward
21
Q
- The gradual chemical reaction by other substance such that the metal is converted to an oxide or other compounds.
A. Corrosion
B. Cheeping
C. Rusting
D. Weathering
A
A. Corrosion
22
Q
- What is the property of a material which resists forces acting to pull the material apart?
A. Shear strength
B. Tensile strength
C. Torsional strength
D. Compressive strength
A
B. Tensile strength
23
Q
- What is the difference between brass and bronze?
A. Brass is composed of copper and zinc while bronze is composed of copper and tin
B. Brass is composed of copper and zinc while bronze is basically copper and tin plus non-ferrous alloy such as manganese, aluminum and chromium
C. Bronze is reddish in color while brass is a mixture of copper and antimony
D. Bronze is mostly an alloy of copper and tin while brass is a mixture of copper and antimony
A
A. Brass is composed of copper and zinc while bronze is composed of copper and tin
24
Q
- A liquid metal is called ______.
A. Mercury
B. Lead
C. Zinc
D. Aluminum
A
A. Mercury
25
25. Which of the following elements when large quantity is harmful to the ferrous metal?
A. Sulfur
B. Silicon
C. Zinc
D. Aluminum
A. Sulfur
26
26. It has molybdenum alloy except ______.
A. SAE 43xx
B. SAE 41xx
C. SAE 6xxx
D. SAE 5xxx
D. SAE 5xxx
27
27. Cast alloy steel for very high temperature application.
A. Manganese – nickel steel casting
B. High chrome steel casting
C. Chrome – nickel steel casting
D. High manganese casting
C. Chrome – nickel steel casting
28
28. What heat treatment process can cast steel materials of high chrome high manganese etc. be subjected for the purpose of machining process?
A. Annealing
B. Tempering
C. Normalizing
D. Quenching
A. Annealing
29
29. Galvanized steel plate is:
A. Aluminum
B. Tin
C. Zinc
D. Manganese
C. Zinc
30
30. Major component of bronze casting is:
A. Copper
B. Manganese
C. Zinc
D. Lead
A. Copper
31
31. Which of the following is the usual procedure when cutting a long thin piece of metal?
A. Turn the blade upside down in the frame
B. Turn the blade at right angles to the frame
C. Use a blade with fewer teeth per inch
D. Set the blade in the frame with the teeth facing toward you
B. Turn the blade at right angles to the frame
32
32. A hacksaw blade with 18 teeth per inch is best suited for cutting what material(s)?
A. Solid stock
B. Aluminum
C. Cast iron
D. Any of these
D. Any of these
33
33. What is used of coolant in the power hacksaw when cutting materials?
A. Absorb the heat of friction
B. Prevent the blade from overheating
C. Prevent the blade from losing its temper
D. All of these
D. All of these
34
34. What is used for finishing a piece of work to size with a file?
A. Double-cut fine-tooth file
B. Mill file
C. Single-cut fine-tooth file
D. Crossing file
C. Single-cut fine-tooth file
35
35. The product of finishing off a piece of metal with a real smooth finish.
A. Draw-filling
B. Mill-filling
C. Side-filling
D. Flat-filling
A. Draw-filling
36
36. How do you call a small piece of metal clogged between the teeth on a file?
A. Clogs
B. Pins
C. Flats
D. Bumps
B. Pins
37
37. Which of the following is described as the “safe edge” of the file?
A. The end opposite the handle
B. The edge with no teeth
C. The one with the handle
D. None of these
B. The edge with no teeth
38
38. The best procedure when filling a piece of metal in a lathe is to take.
A. Short even strokes
B. Long fast strokes
C. Long slow strokes
D. Short fast strokes
C. Long slow strokes
39
39. Which of the following information is necessary when ordering a file?
A. Size (length)
B. Type
C. Shape
D. All of these
D. All of these
40
40. Which of the following is the best file to be used when finishing sharp corners or slots and grooves?
A. Mill file
B. Knife file
C. Square
D. Jeweler’s file
B. Knife file
41
41. Alloy steel known for its resistance to corrosion, abrasion and wear that is usually ideal for mill grinding of ore in cement and concentrator application. It is usually combined with molybdenum to increase the depth hardening.
A. Manganese chromium steel
B. Chromium – moly steel
C. Chromium – nickel – moly steel
D. Manganese – moly steel
B. Chromium – moly steel
42
42. Commonly utilized / cheapest shaft material available in the market with carbon content of 0.28 to 0. 4?
A. SAE 4132
B. SAE 4320
C. SAE 1030
D. SAE 4130
C. SAE 1030
43
43. Heating of metal above the critical temperature and then cooling slowly usually in the furnace to reduce the hardness and improve the machinability is called:
A. Normalizing
B. Annealing
C. Tempering
D. Quenching
B. Annealing
44
44. It is hardening treatment whereby a cast metal is being heated to a very high temperature then suddenly subjected to rapid cooling to improve hardenability or wear resistance is called:
A. Normalizing
B. Tempering
C. Annealing
D. Quenching
D. Quenching
45
45. SAE steel that responds to heat treatment.
A. SAE 1060
B. SAE 1117
C. SAE 1030
D. SAE 1020
B. SAE 1117
46
46. A form of correction that develop on a highly localized area on a metal surfaces.
A. Crevice
B. Erosion
C. Galvanic
D. Spitting
D. Spitting
47
47. The deterioration of organic coating characterized as completely _______.
A. Chalking
B. Rusting
C. Checking
D. Fritting
A. Chalking
48
48. The temperature above which the alloy is liquid and will run is known as _______.
A. Melting point
B. Flow point
C. Pour point
D. Dew point
A. Melting point
49
49. It refers to any layer or deposit of extraneous material on the heat – transfer surface.
A. Low line
B. Pressure drop
C. Fouling
D. Scaling
C. Fouling
50
50. Steel containing large amounts of mild nickel and chromium.
A. Carbon steel
B. Stainless steel
C. Alloy steel
D. Cast steel
B. Stainless steel
51
51. How is “eleven – sixteenths” of an inch expressed in decimal?
A. 0.6785
B. 0.6875
C. 0.7685
D. 0.6578
B. 0.6875
52
52. What is the approximate distance of the making on a micrometer barrel?
A. 0.025” apart
B. 0.0025” apart
C. 0.250” apart
D. 2.50” apart
A. 0.025” apart
53
53. Which of the following is the effect if the lathe is put into black gear?
A. Go backwards of the same speed
B. Faster
C. Slower
D. At a slower speed backwards
C. Slower
54
54. The work should be held with ______ when using a drill press.
A. The hand
B. A vise or clamp
C. A pair of pliers
D. Gloves on
B. A vise or clamp
55
55. What is normally used in drilling a hole in a piece of work held in a lathe chuck?
A. Compound rest
B. Tailstock and drill chuck
C. Cross-feed
D. Headstock
B. Tailstock and drill chuck
56
56. Copper is annealed by heating to a cherry red color and:
A. Dousing in cold water
B. Dousing in oil
C. Cooling slowly in air
D. Dousing in hot water
C. Cooling slowly in air
57
57. What is the main purpose of “annealing” a metal?
A. To make the metal harder
B. To make metal softer
C. To make the metal harder medium-hard
D. To make the metal harder shiny
B. To make metal softer
58
58. The purpose of “tempering” is to make a metal what?
A. Harder
B. Less brittle
C. Softer
D. More brittle
B. Less brittle
59
59. What is the minimum diameter of a piece of round stock necessary to make key ¾” on a side?
A. 1.5”
B. 0.1”
C. 1.06”
D. 0.75”
C. 1.06”
60
60. A scriber is made from what material?
A. Carbon steel
B. Tool steel
C. Cold-rolled steel
D. Hot-rolled steel
B. Tool steel
61
61. The corrosion of iron or iron – base alloy.
A. Rusting
B. Crazing
C. Chalking
D. Fritting
A. Rusting
62
62. A corrosion occurs within or adjacent to a crevice formed by contact with another piece of the same or another metal is called:
A. Galvanic
B. Pitting
C. Erosion
D. Crevice
A. Galvanic
63
63. An alloy of tin, copper, antimony or sometimes lead.
A. Gold
B. Babbitt
C. Aluminum
D. Cast iron
B. Babbitt
64
64. The cheapest and most abundant engineering material is __________.
A. Aluminum
B. Steel
C. Cast iron
D. Babbitt
C. Cast iron
65
65. They are usually steel or steel casting.
A. Mild steel
B. Carbon steel
C. Fire box steel
D. Drop – forge – dies
B. Carbon steel
66
66. An iron has physical properties closely resembling those of mild steel called.
A. Malleable cast iron
B. Malleable iron
C. White iron
D. Gray iron
A. Malleable cast iron
67
67. An iron in which most of the carbon is chemically combined with the iron is called.
A. Cast iron
B. Gray iron
C. White iron
D. Malleable iron
C. White iron
68
68. Which of the following metals is non-magnetic?
A. Manganese steel
B. Cast steel
C. Alloy steel
D. Cast iron
A. Manganese steel
69
69. Which of the following is not a kind of cast iron?
A. Gray iron
B. White iron
C. Malleable iron
D. Lead iron
D. Lead iron
70
70. Which of the following is not used to temper steel?
A. Oil bath
B. Brine / slat bath
C. Steam bath
D. Water bath
C. Steam bath
71
71. Before applying layout blue on a piece of metal, it must be:
A. Roughened
B. Cleaned
C. Heated
D. Cold
B. Cleaned
72
72 A drill bit has how many flutes?
A. 4 flutes
B. 2 flutes
C. 3 flutes
D. No flutes
B. 2 flutes
73
73. The alignment of coupling faces can be checked by which process?
A. Using an inside micrometer
B. Inserting a thermocouple
C. Inserting a feeler gage between the coupling faces at various points around the circumference
D. Rotating and measuring to nearest permanent fitting
C. Inserting a feeler gage between the coupling faces at various points around the circumference
74
74. A piece of cast iron held against an emery wheel will give off what?
A. Dull yellow sparks
B. Red sparks
C. Bright shiny sparks
D. No sparks
A. Dull yellow sparks
75
75. When cutting material in lathe, the softer the material being cut, the tool bit should have:
A. More top rake
B. Double top rake
C. Less top rake
D. Any of these
C. Less top rake
76
76. After grinding a tool bit, the cutting edge should be:
A. Case-hardened
B. Stoned with an oilstone
C. Rubbed with emery cloth
D. Rubbed with crocus cloth
B. Stoned with an oilstone
77
77. When turning a piece of round metal in a lathe, the front clearance should be smaller for:
A. Large-diameter
B. Cutting angles
C. Small-diameter cutting
D. None of these
C. Small-diameter cutting
78
78. When cutting material in a lathe, the harder the material being cut, the tool bit should have:
A. More side rake
B. More top rake
C. Less side rake
D. No side rake
C. Less side rake
79
79. What is the primary purpose of knurling?
A. Smooth material
B. Roughen material
C. Polish material
D. Sharpen material
B. Roughen material
80
80. What do you call the process of removing the sharp edges from a piece of stock?
A. Knurling
B. Planning
C. Chamfering
D. Turning
C. Chamfering
81
81. Which of the following metals is easy to chisel?
A. Alloy steel
B. Manganese steel
C. Stainless steel
D. Cast iron
B. Manganese steel
82
82. Ferrous metals contain a relatively large amount of ______.
A. Manganese
B. Carbon
C. Sulfur
D. Phosphorus
B. Carbon
83
83. Which of the following is not a classification of iron core?
A. Siderite
B. Hematite
C. Sulfurite
D. Magnetite
C. Sulfurite
84
84. Stainless steel is obtaining principally by the use of which of the alloying elements?
A. Chromium
B. Nickel
C. Carbon
D. Tungsten
A. Chromium
85
85. Which of the following metals will respond to heat treatment?
A. Cast iron
B. Wrought iron
C. Medium carbon steel
D. Low carbon steel
C. Medium carbon steel
86
86. The property of steel which resist indention of penetration is called.
A. Hardness
B. Elasticity
C. Ductility
D. None of these
A. Hardness
87
87. The ability of metal to stretch band or twist without breaking or cracking is called.
A. Elasticity
B. Ductility
C. Brittleness
D. Plasticity
B. Ductility
88
88. The ability of the material to return to its original shape after being elongated or distorted when the forces are released is called.
A. Elasticity
B. Brittleness
C. Plasticity
D. Creep
A. Elasticity
89
89. Material, usually ceramics employed where resistance to very high temperature is required, as for furnace linings and metal melting pots is called:
A. Bricks
B. Insulator
C. Refractories
D. Clay
C. Refractories
90
90. Any material that retard the flow of electricity, used to prevent or escape of electric current from conductors.
A. Bricks
B. Insulators
C. Refractories
D. Composite
B. Insulators
91
91. At what speed that carbon steel drills should be operated?
A. Speeds greater than that when using a high-speed drill
B. Speeds less than that when using a high-speed drill
C. The same speed as that when using a high-speed drill
D. None of the above
B. Speeds less than that when using a high-speed drill
92
92. A specific method of zinc galvanizing in which parts are tumbled in zinc dust at high temperatures.
A. Sheradizing
B. Super finishing
C. Polishing
D. Pickling
A. Sheradizing
93
93. Abrasion of parts against wheels or belts coated with polishing compounds.
A. Sheradizing
B. Super finishing
C. Polishing
D. Pickling
C. Polishing
94
94. A super fine grinding operation used to expose non-fragmented, crystalline base metal.
A. Sheradizing
B. Super finishing
C. Polishing
D. Pickling
B. Super finishing
95
95. A process in which metal is dipped in ductile acid solutions to remove dirt grease and oxides.
A. Sheradizing
B. Super finishing
C. Polishing
D. Pickling
D. Pickling
96
96. A hot-dip or electroplate application of tin to steel.
A. Tin-plating
B. Metal spraying
C. Organic finishes
D. Lapping
A. Tin-plating
97
97. A fine grinding operation used to obtain exact fit and dimensional accuracy.
A. Tin-plating
B. Metal spraying
C. Organic finishes
D. Lapping
D. Lapping
98
98. The covering of surfaces with an organic film of paint, enamel or lacquer.
A. Tin-plating
B. Metal spraying
C. Organic finishes
D. Lapping
C. Organic finishes
99
99. The spraying of molten metal onto a product. Methods include metallizing, metal powder spraying and plasma flame spraying.
A. Tin-plating
B. Metal spraying
C. Organic finishes
D. Lapping
B. Metal spraying
100
100. Application of a thin phosphate coating on steel improve corrosion resistance.
A. Parkerizing
B. Honing
C. Hard surfacing
D. Galvanizing
A. Parkerizing
