E1 to E3_50 Flashcards by alyssa everlyn evangelista

The maximum stress to which a standardized test specimen may be subjected without permanent deformation.

A. Endurance limit
B. Proportional limit
C. Elastic limit
D. Plastic limit

C. Elastic limit

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The modulus of elasticity is a measure of:

A. Stiffness
B. Toughness
C. Resilience
D. Hardness

A. Stiffness

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Aging at moderately elevated temperature expedites the process and

A. Natural aging
B. Artificial aging
C. Normal aging
D. Supernatural aging

B. Artificial aging

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It is a tendency to fracture without appreciable deformation

A. Ductility
B. Brittleness
C. Malleability
D. Plasticity

B. Brittleness

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It is the characteristic of exhibiting different properties when tested in different directions

A. Allotropy
B. Anistropy
C. Isentropic
D. Isotropic

B. Anistropy

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It is one in which specimen, supported at both ends as a simple beam is broken by the impact strength of the metal

A. Charpy test
B. Izod test
C. Rockwell test
D. Universal test

A. Charpy test

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Steel that has been deoxidized with a strong deoxidizing agent such as silicon or aluminum, in order to eliminate a reaction between the carbon and oxygen during solidification.

A. Carbon steel
B. Tool steel
C. Killed steel
D. Structural steel

C. Killed steel

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Involves the loss of ductility because of a physical or chemical change of the material is known as

A. Embrittlement
B. Pitting
C. Cold shortness
D. Decarburization

A. Embrittlement

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A material commonly used for shielding or screening magnetism

A. Brass
B. Copper
C. Aluminum
D. Soft iron

D. Soft iron

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A magnet is able to attract

A. Iron, aluminum and brass
B. Iron, cobalt and zinc
C. Iron, copper and nickel
D. Nickel, cobalt and steel

D. Nickel, cobalt and steel

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In threaded members, which of the following defines N.C?

A. Neutral cut
B. National cut
C. National coarse
D. Not Center

C. National coarse

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In threaded members, which of the following represents N.F?

A. National file
B. Neutral file
C. National file
D. Not found

C. National file

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What tool used in precision work to smooth or enlarge holes?

A. Round out
B. Reamer
C. Drift pin
D. Protractor

B. Reamer

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Which of the following chisels would be used for cutting oil grooves?

A. Diamond–point chisel
B. Round-nose chisel
C. Cold chisel
D. Hot chisel

B. Round-nose chisel

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How do you call the tool used for cleaning files?

A. File cleaner
B. File oilstone
C. File card
D. Scraper

C. File card

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Which of the following is not a cut of file?

A. Smooth
B. Half-round
C. Second cut
D. Bastard

B. Half-round

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Which of the following is the smallest size drill?

A. # 80
B. # 1
C. # 60
D. # 0

A. # 80

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Which of the following is the largest size drill?

A. A
B. Z
C. X
D. XX

B. Z

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The size of a drill is stamped on the:

A. Point
B. Margin
C. Shank
D. Flute

C. Shank

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Which of the following materials is used for making permanent magnets?

A. Carbon steel
B. Platinum cobalt
C. Alnico
D. All three mentioned

D. All three mentioned

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One of the following is the best conductor of electricity. Which one/

A. Graphite
B. China clay
C. Porcelain
D. Ceramics

A. Graphite

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Dielectric strength of a material depends on the material’s

A. Moisture content
B. Thickness
C. Temperature
D. All of these

D. All of these

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Which medium has highest value of dielectric strength?

A. Glass
B. Mica
C. Porcelain
D. Quartz

B. Mica

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Which of the following is a primary cell?

A. Mercury – oxide
B. Lead – acid
C. Nickel – iron – alkaline
D. Nickel – cadmium – alkaline

A. Mercury – oxide

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25. Which of the following contact point metals has highest melting point? A. Silver B. Tungsten C. Gold D. Copper

C. Gold

26. A material best suited for manufacturing of fuse wire A. Aluminum B. Silver C. Lead D. Copper

B. Silver

27. The laminations are made from A. Low carbon steel B. Silicon sheet steel C. Nickel alloy steel stays D. Chrome steel sheets

B. Silicon sheet steel

28. Which of the following metals gets deposited to provide an undercut for chromium? A. Copper B. Silver C. Bronze D. Lead

C. Bronze

29. In nickel – iron cell, the electrolyte is: A. Dilute sulphuric acid B. Dilute potassium hydroxide C. Dilute sodium ammonium hydroxide D. Dilute sodium chloride solution

B. Dilute potassium hydroxide

30. Which of the following is not a standard thread form? A. Square B. Double flute C. American National D. 60 deg. sharp V

A. Square

31. How do you call the tool used to cut threads in a hole? A. Top B. Bit C. Tap D. Reamer

C. Tap

32. Hand taps are provided in sets of three. Which of the following set of three? A. Taper, plug and end B. Taper, plug and bottom C. Short, taper and bottom D. Short, medium and long

B. Taper, plug and bottom

33. Which of the following taps should be used to start a thread? A. Plug B. Bottom C. Short D. Taper

D. Taper

34. Which of the following size of the drill is used in preparing to tap a hole? A. Equal to the size of the tap B. Larger than the size of the tap C. Smaller than the size of the tap D. None of these

C. Smaller than the size of the tap

35. Pipe taps are: A. The same size from end to end B. Tapered C. Not fluted D. Not hardened

B. Tapered

36. When preparing to tap a hole for a pipe fitting the size of the drill will be: A. Larger than the tap size B. Smaller than the tap size C. Equal to the size of the tap D. None of these

C. Equal to the size of the tap

37. Which of the following does not have to be lubricated when drilling? A. Steel B. Monel C. Brass D. Tool steel

B. Monel

38. How do you call the tool used when cutting a hole in the side of a round piece of metal? A. Vise B. “V” block C. Jaw holder D. Chuck

B. “V” block

39. When measuring a drill for size measure across the: A. Margins B. Shank C. Flutes D. Point

A. Margins

40. Which of the following is not a primary cell? A. Carbon zinc B. Silver oxide C. Silver zinc D. Nickel – cadmium

C. Silver zinc

41. Select from the conductors below that has the least electrical conductivity A. Lead B. Tin C. Zinc D. Aluminum

A. Lead

42. The material used for commutator brushes is mostly A. Copper B. Mica C. Carbon D. Cast iron

C. Carbon

43. Generally, the material for thermocouple is A. Chrome copel B. Chrome alumel C. Platimum rhodum D. Any of these

D. Any of these

44. Select the best conductor of electricity A. Carbon B. Silver C. Copper D. Iron

B. Silver

45. Any heating ad cooling of steel that produces a rounded or globular form of carbide. A. Spheroidizing B. Malleability C. Graphitizing D. Normalizing

A. Spheroidizing

46. Steel that has been hammered rolled or drawn in the process of manufacture. A. Wrought steel B. Rimmed steel C. Killed steel D. Stainless steel

A. Wrought steel

47. Which of the following improves red hardness? A. Boron B. Cobalt C. Copper D. Columbium

B. Cobalt

48. An alloy of nickel and copper. A. Monel B. Iconel C. Titanium D. Vanadium

A. Monel

49. Commutator segments are made of A. Zinc B. Brass C. Copper D. Nickel

C. Copper

50. If you wanted to check the face of a pump slide valve or other flat-faced valve, you could check for trueness on a: A. Flat board B. Piece of glass C. Surface plate D. Bearing plate

C. Surface plate

51. Which of the following is used to keep a metal clean while soldering? A. Flax B. Flux C. Torch D. Insulated

B. Flux

52. Before splicing electric wires, they should be: A. Tinned B. Soldered C. Cleaned and tinned D. Insulated

C. Cleaned and tinned

54. Before drilling a hole in a piece of metal, it should be: A. Marked with chalk B. Scribed C. Center-punched D. Protracted

C. Center-punched

53. To check the speed of a motor or other rotary machine, one would use a: A. Galvanometer B. Tachometer C. Micrometer D. Geiger counter

B. Tachometer

55. A tap or die marked ¼ - 20 indicates: A. ¼” radius – 20 cm. long B. ¼” diameter – 20 threads per in. C. ¼” radian – 20 threads per in. D. ¼” turn – 20 times

B. ¼” diameter – 20 threads per in.

56. After a piece of pipe has been cut, the hole is cleaned out with a: A. Piper reamer B. Pipe taper C. Pipe cleaner D. Hole cleaner

A. Piper reamer

57. How do you call the tool(s) used for cutting pipe threads? A. Pipe cutter B. Pipe threader C. Pipe stock and die D. Pipe ratcher cutter

C. Pipe stock and die

58. How do you call the tool used when working with larger sizes of pipe? A. Chain pipe wrench B. Cahin holder C. Chain tongs D. A or B

D. A or B

59. What tool is used when preparing to put fittings on copper tubing? A. Tube spreader B. Tube retarded C. Flaring tool D. Tube countersink

C. Flaring tool

60. What are the most commonly used materials as photo cathode for the photoelectric emission? A. Barium and calcium B. Cesium and rubidium C. Arsenic and boron D. Thorium and tungsten

C. Arsenic and boron

61. Manganese is an alloy of A. Copper, manganese and nickel B. Copper, zinc and lead C. Copper, aluminum and chromium D. Copper, chromium and cadmium

A. Copper, manganese and nickel

62. The one that is an acceptor impurity element. A. Antimony B. Gallium C. Arsenic D. Phosphorus

B. Gallium

63. Which of the following is not a method of non-destructive testing of steel castings and forging? A. Radiography B. Magnetic particle C. Ultrasonic D. Chemical analysis

D. Chemical analysis

64. All of the following statements about rusting of iron are correct, except: A. Contact with water and oxygen are necessary for rusting to occur. B. Contact with a more electropositive metal reduces rusting. C. Halides aggravate rusting process which involves electrochemical oxidation reduction reaction. D. Pitting occurs in oxygen-rich anodic areas and the rust is deposited nearby.

D. Pitting occurs in oxygen-rich anodic areas and the rust is deposited nearby.

65. If 1080 steel is annealed by very slow cooling from 10000C to ambient temperature, its microstructure will consist almost solely of: A. Austenite B. Bainite C. Cementite D. Pearlite

D. Pearlite

66. Steel can be strengthened by all of the following practices, EXCEPT: A. Annealing B. Quenching and tempering C. Work hardening D. Grain refinement

A. Annealing

67. Intrinsic silicon becomes extrinsically conductive, with electrons as majority carriers when doped with which of the following? A. Antimony B. Boron C. Germanium D. Aluminum

A. Antimony

68. The linear portion of the stress – strain diagram of steel is known as the: A. Modulus of elasticity B. Plasticity C. Irreversible range D. Elastic range

D. Elastic range

69. Imperfections within metallic crystal structures may be all of the following, EXCEPT: A. Lattice vacancies or extra interstitial atom B. Ion pairs missing in ionic crystals C. Displacement of atoms of interstitial sites D. Linear defects, or slippage dislocations caused by shear

B. Ion pairs missing in ionic crystals

70. A steel numbered SAE – AISI, C1035 when not rolled and contains 0.60% to 1.30% carbon and used when extra hardness is required. A. Low carbon steel B. Medium carbon steel C. High carbon steel D. Very high carbon steel

C. High carbon steel

71. Which of the following alloying elements used in making high speed steel? A. Molybdenum B. Nickel C. Manganese D. Silicon

A. Molybdenum

72. Which of the following alloying used in springs to make more reliant? A. Silicon B. Tungsten C. Hardness and resistance D. Nickel

A. Silicon

73. It refers to that property in steel which resist indention or penetration. It is usually expressed in forms of the area of an indention made by a special ball under a standard load or the depth of a special indentor. A. Hardness B. Ductility C. Malleability D. Wear resistance

A. Hardness

74. The distance from a point on a screw thread to a corresponding point on an adjacent thread, measured parallel to the axis. A. Pitch B. Lead C. Thread D. Crest

A. Pitch

75 The top surface joining the two sides of a thread. A. Pitch B. Lead C. Lead D. Space

B. Lead

76. The amount of variation permitted in the size of a part. It is the difference between the limits of maximum and minimum dimensions of a given part. It may be expressed at plus, minus or as both plus and minus. A. Tolerance B. Limit C. Variation D. Clearance

A. Tolerance

77. The instrument used to reshape a grinding wheel that is grooved or out of round is called a: A. Wheel aligner B. Wheel emery C. Wheel dresser D. Wheel cutter

C. Wheel dresser

78. The instruments used to remove old packing from packing glands and stuffing boxes are called: A. Packing tools B. Gland box cleaners C. Packing bits D. Packing screws

A. Packing tools

79. When working on bearings and checking for high spots, it is customary to apply what? A. White lead B. Dykem blue C. Red lead D. Prussian blue

D. Prussian blue

80. When a metal is cold worked, all of the following generally occur, EXCEPT: A. Ductility decreases B. Grains become equal – axed C. Tensile strength increases D. Slip or twinning occurs

B. Grains become equal – axed

81. Hard water is water, which contains soluble salts of which of the following elements A. Sodium B. Sulfur C. Calcium D. Chlorine

C. Calcium

82. Which of the following metals has the highest specific heat capacity at 100oC? A. Aluminum B. Bismuth C. Copper D. Iron

A. Aluminum

83. Aluminum pistons are either cast or A. Ground B. Forged C. Pressed D. Welded

B. Forged

85. Which of the following gasket materials should be used on a Freon system? A. Metallic B. Asbestos C. Rubber D. A and B

D. A and B

84. Valves and piping in an ammonia system are made of A. Iron B. Brass C. Copper D. Bronze

A. Iron

86. The non ferrous alloy corrodes in ammonia is A. Copper B. Bronze C. Brass D. All of these

D. All of these

87. What is used in the main condenser to control electrolysis? A. Brass plate B. Aluminum plate C. Zinc plates D. Bronze plate

C. Zinc plates

88. Which of the following types of packing would be used on steam joints? A. Asbestos B. Neoprene C. Metallic D. A or C

D. A or C

91. A classification of iron ore which contains 72.5% iron when pure and the remaining percentage are impurities. A. Hematite B. Magnetite C. Limanite D. Siderite

B. Magnetite

89. The process applied to iron pipe, which retards corrosion, is called A. Galvanizing B. Annealing C. Soldering D. Tinning

A. Galvanizing

93. Which of the following represents manganese steel? A. 13XX B. 40XX C. 50XX D. 10XX

A. 13XX

90. A scriber is made from what steel? A. Carbon steel B. Cold rolled steel C. Tool steel D. Hot-rolled steel

C. Tool steel

92. Which of the following iron ore also known as “brown hematite” or ferric oxide a yellowish brown powder? A. Hematite B. Magnetite C. Limanite D. Siderite

C. Limanite

94. It is another kind of furnace cast iron is remelted to make into cast iron. The furnace is charges with layers of coke and pig iron plus scrap iron. A. Open-hearth furnace B. Electric furnace C. Cupola D. Bessemer

C. Cupola

95. A furnace which consists of blowing a stream of air through a molten mass of iron pig. A stream of air is turned on through the wind box and enters the converter at the bottom. Manganese, carbon and other elements of varying amounts are added to produce steel which is then poured and solidifies. A. Open-hearth furnace B. Electric furnace C. Cupola D. Bessemer

D. Bessemer

96. A furnace similar to open-heart. The principal difference is the method of heating the charged. It is used in producing quality of steels because melting and refining is closely controlled. A. Closed-heart furnace B. Electric furnace C. Cupola D. Bessemer

B. Electric furnace

97. It is the process of reheating or drawing of metal that has been hardened to a comparatively low temperature in order to relieve the hardening strain and increase the toughness of the steel. A. Tempering B. Annealing C. Cyaniding D. Normalizing

A. Tempering

98. Case hardening is the process of hardening the outer surface of the metal and inner parts are soft. What percentage of carbon content that this type of hardening is allowed? A. 15% and above B. 10 to 20% only C. less than 5% only D. Any of the following

A. 15% and above

99. A steel numbered SAE – AISI, C1018 and contains 0.10% to 0.30% carbon. A. Low carbon steel B. Medium carbon steel C. High carbon steel D. Very high carbon steel

A. Low carbon steel

100. A steel numbered SAE – AISI, C1035 when not rolled and contains 0.30% to 0.60% carbon. A. Low carbon steel B. Medium carbon steel C. High carbon steel D. Very high carbon steel

B. Medium carbon steel

1. A machine for shaping a work piece by gripping it in a holding device and rotating it under power against a suitable cutting tool for turning, boring facing or threading. A. Shaper B. Lathe C. Planer D. Engine lathe

B. Lathe

2. A machine for the removal of metal by feeding a work piece through the periphery of a rotating circular cutter. A. Milling Machine B. Milling Planer C. Milling Cutter D. Milling Shaper

A. Milling Machine

3. It is a machine tool used for cutting flat-on-flat an-toured surfaces by reciprocating a single-point tool across the work piece. A. Planer B. Shearing machine C. Shaper D. Slab cutter

C. Shaper

4. It is the machine for the shaping of long , flat or flat contoured surfaces by reciprocating the work piece under a stationary single-point tool or tools. A. Planer B. Shaper C. Lathe D. Turret Lathe

A. Planer

5. It is the machine used for shaping of metal or plastic by pushing or pulling a broaching across a surface or through an existing hole in a work piece. A. Planning B. Shaping C. Broaching D. Milling

C. Broaching

6. It is a device, usually motor-driven, fitted with an end cutting tool that is rotated with sufficient power either to create a hole or to enlarge an existing hole in a solid material. A. Drill jigs B. Drill press C. Drill chuck D. Drilling machine

D. Drilling machine

7. It is a machine tool designed to machine internal work such as cylinders, holes in castings, and dies, types are horizontal, vertical jig and single. A. Boring machine B. Broaching machine C. Drilling machine D. Boring mill

B. Broaching machine

8. It is a milling method in which parts placed in a row parallel to the axis of the cutting tool end are milled simultaneously. A. Abreast milling B. Angular milling C. Helical milling D. None of these

A. Abreast milling

9. A core drill with hardened steel shot pellets that revolve under the rim of the rotating tube, employed in rotary drilling in every hard ground. A. Automatic drill B. Double core barrel drill C. Flat drill D. Adamantine drill

D. Adamantine drill

10. The part of a machine for wood planning that carries the cutters. A. Adz stock B. Adz block C. Head stock D. Heel block

B. Adz block

11. Which of the following safety precautions should be followed when renewing a flange gasket? A. Drain the line thoroughly B. Tie down isolation valves C. Isolate the section to be worked on D. All of these

D. All of these

12. In installing a new flange gasket, which of the following must be done first? A. Flange faces are painted B. Flange are absolutely clean C. Isolating valves are open D. Old gasket is in place

B. Flange are absolutely clean

13. Which of the following is correct about standard wire gage? A. # 10 is larger than # 5 B. # 1 is smaller than # 2 C. # 25 is smaller than # 20 D. # 30 is larger than # 25

C. # 25 is smaller than # 20

14. Which of the following tools would be most useful when taking leads on bearings? A. Dividers B. Micrometer C. Outside callipers D. Center gage

B. Micrometer

15. What is the wrench size for a ¾” nut? A. 1 – ¼” B. ¾” C. 1 – ½” D. 10 / 24”

A. 1 – ¼”

16. Which of the following would cause hot bearings? A. Improper oil B. Improper alignment C. Dirt in oil D. All of these

D. All of these

17. What is the approximate melting point of Babbitt? A. 1000 deg. F B. 750 deg. F C. 650 deg. F D. 500 def. F

C. 650 deg. F

18. Which of the following is correct in pouring Babbitt? A. It can be done in several pouring B. Must be poured At one time C. Can be done at intervals D. Must be done in cool place

B. Must be poured At one time

19. Which of the following groups of pipe sizes is correct? A. ¼, ½, ¾, 7/8, 1 B. ¼, 3/8, ½, ¾, 1 C. ¼, 3/8, ½, 5/8, ¾, 1 D. ¼, ½, 5/8, ¾, 1

B. ¼, 3/8, ½, ¾, 1

20. Which of the following where pipe wrench (Stillson) was designed to be used? A. Hexagonal objects B. Square objects C. Round objects D. Flat objects

C. Round objects

21. A grinding mill of large diameter with either lumps of ore, pebbles or steel balls as crushing bodies the dry lead is air swept to remove mesh material. A. Aero fall mill B. Aero motor C. Aerial speed D. Ball mill

A. Aero fall mill

22. A tool – steel cutter used for finishing surfaces of angles greater or less than 90o with its axis of rotation called _____. A. Circular cutter B. Helical cutter C. Angle cutter D. Asphalt cutter

C. Angle cutter

23. Milling surfaces that are flat and at an angle to the axis of the spindle of the milling machine called. A. Hammer milling B. Helical milling C. Angular milling D. Circular milling

C. Angular milling

24. It is a hole in revolving cutter or grinder wheel for mounting it on an arbor A. Hole saw B. Arbor hole C. Star drill D. Peep hole

B. Arbor hole

25. A machine used for forcing an arbor or a mandrel into drilled or bored parts preparatory to turning or grinding A. Automatic press B. Bladder press C. Arc press D. Arbor press

D. Arbor press

26. A solids grinder and the product is a fine powder. A. Atomizer mill B. Autogenous mill C. Attrition mill D. Ball mill

A. Atomizer mill

27. A machine in which material are pulverized between two toothed metal disks rotating in opposite directions. A. Attrition mill B. Tumbling mill C. Ball mill D. Beater mill

A. Attrition mill

28. A straight brace for bits whose shank comprises a coarse – pitch screws sliding in a threaded tube with a handle at the end of the device is operated by pushing the handle called A. Automatic capacity B. Automatic drill C. Automatic regulator D. Automatic stocker

B. Automatic drill

29. A press in which mechanical feeding of the work is synchronized with the press action. A. Dial press B. Punch press C. Automatic press D. Manual press

C. Automatic press

30. A supporting member that carries a wheel and either rotates with the wheel to transmit mechanical power to or from it, or allows the wheel to rotate freely on it is called A. Shaft B. Axle C. Bushing D. Coupling

B. Axle

31. In which of the following where pipe is measured? A. Inside diameter B. Thickness of wall C. Outside diameter D. Wire gage

A. Inside diameter

32. In which of the following where tubing is measured by: A. Inside diameter B. Thickness of wall C. Outside diameter D. Wire gage

C. Outside diameter

33. How do you call the tool used to cut thread on pipe? A. Pipe tool B. Pipe vise C. Pipe stock D. Pipe cutter

C. Pipe stock

34. How do you call the pipe fitting which has two openings and provides a turn 90 degrees? A. An elbow B. A coupling C. A tee D. A union

A. An elbow

35. In which of the following where plug cock offers? A. More resistance to flow than a globe valve B. The same resistance to flow as a globe valve C. Less resistance to flow than a globe valve D. The same resistance to flow as an angle valve

C. Less resistance to flow than a globe valve

36. What is the common flux to be used when soldering brass copper or tin? A. Tallow B. Borax C. Rosin D. Sal ammoniac

C. Rosin

37. In one turn of the screw in a micrometer, it moves the spindle by what amount? A. 0.25” B. 0.025” C. 0.205” D. 0.110”

B. 0.025”

38. What is the process used to retard corrosion on iron pipe? A. Soldering B. Tempering C. Annealing D. Galvanizing

D. Galvanizing

39. On XX Heavy pipe the extra metal is added to which of the following? A. Outside B. Inside C. Half on the inside, half on the outside D. Three quarters on the outside one quarter on the inside

B. Inside

40. Which is very necessary when installing packing in a packing box? A. Leave one old turn at the bottom of the packing box B. Remove one turn and install one new turn of packing C. Leave sufficient end clearance on each turn to allow for expansion D. Place end cuts directly in line with each other

C. Leave sufficient end clearance on each turn to allow for expansion

41. A portable sanding tool having a power – driven abrasive coated continuous belt is called A. Bench sander B. Belt heightener C. Gear sander D. Belt sander

D. Belt sander

42. A machine for bending a metal or wood part by pressure is known as A. Pressing machine B. Bending machine C. Forming machine D. Shaping machine

B. Bending machine

43. A machine, which simultaneously molds and cures a pneumatic tire is called A. Bladder press B. Crank press C. Automatic press D. Manual press

A. Bladder press

44. A file whose edges are parallel is known as A. Crochet file B. Cross cut file C. Equaling file D. Blunt file

D. Blunt file

45. Slightly rounding a cutting edge to reduce the probability of edge chipping is referred to as A. Broaching B. Butting C. Blunting D. Bleaching

B. Butting

46. A rigid tool holder to machine internal surfaces is called: A. Boring bar B. Boring mill C. Broaching machine D. Corrugated bar

A. Boring bar

47. Which of the following is a boring machine tool used particularly for large work piece, types are horizontal and vertical? A. Boring mill B. Burrstone mill C. Cage mill D. Chile mill

A. Boring mill

48. A flat – ended twist drill designed to convert a cone at the bottom of a drilled hole into a cylinder is called A. Churn drill B. Core drill C. Bottoming drill D. Spiral drill

C. Bottoming drill

49. A tap with a chamfer 1- 1 ½ threads in length A. Center tap B. Bottom tap C. Taper tap D. Plug tap

B. Bottom tap

50. A small portable hand drill customarily used by hand setters to drill holes in breast called A. Diamond drill B. Spiral drill C. Churn drill D. Breast drill

D. Breast drill

51. A square foot of steel plate 1/8” thick weighs 5 pounds. The weight of a steel plate 10 feet long and 4 feet wide would be how much? A. 200 lbs B. 20 lbs C. 2000 lbs D. 20,000 lbs

A. 200 lbs

52. Cast iron weighs 640 pounds per cubic foot. How much is the weight of a cast iron block 14” x 12” x 18”? A. 1200 lbs B. 1120 lbs C. 1000 lbs D. 1088 lbs

B. 1120 lbs

53. A tank 28” in diameter and 14” high is filled with water. The total pressure on the bottom of the tank is: A. 3741 lbs B. 2573 lbs C. 4257 lbs D. 3000 lbs

A. 3741 lbs

54. A double-bottom tank is 18” wide 24” long and 4” deep. It is filled with fresh water. The total capacity in tons is: A. 50 B. 55 C. 48 D. 45

C. 48

55. Sheet metal of # 18 gage is heavier than: A. 12 gage B. 22 gage C. 14 gage D. 16 gage

B. 22 gage

56. What is the use of shims? A. Separate fresh and salt-water lines B. Replace fuses C. Adjust cylinder liners D. Adjust bearing clearances

D. Adjust bearing clearances

57. How do you call the process used to retard corrosion (rust) on iron pipe and fitting? A. Tinning B. Galvanizing C. Soldering D. Sulphurizing

B. Galvanizing

58. In pipe fittings, the term “offset” refers to what? A. A cut off running at right angles to the original piping B. Two pipes running parallel to each other C. A bend in the pipe D. Two size of pipe in the same run

C. A bend in the pipe

59. In machine shop, if the lips of a drill are of different lengths then which of the following will likely to happen? A. The drill will not cut B. The hole will be larger than the drill C. The hole will be smaller than the drill D. None of these will happen

B. The hole will be larger than the drill

60. Which of the following statement(s) is correct for the “brazed joint”? A. Stronger than a soldered joint B. Weaker than a soldered joint C. The same strength as a soldered joint D. Three times as strong as a soldered joint

A. Stronger than a soldered joint

61. In ________ type shaper, the reciprocating movement of the arm is effected by means of a rack and pinion. A. Gear B. Thread C. Screw D. Bolt

A. Gear

62. In hydraulic shaper the reciprocating movement of the ram is obtained through ___ pressure. A. Mercury B. Oil C. Water D. Alcohol

B. Oil

63. A job, which is fixed away from the table, can be machined by A. Running head B. Moving head C. Travelling head D. Static head

C. Travelling head

64. The stroke positioning lever is located on the ________ of shaper. A. Lever B. Table C. Ram D. Chunk

C. Ram

65. The length of a shaper stroke is the length of job plus ______. A. Displacement B. Tolerance C. Allowance D. Clearance

D. Clearance

66. Rocker arm is a _______ part of shaper. A. Oscillating B. Reciprocating C. Moving D. Running

A. Oscillating

67. In a shaper, the ______ strokes takes place. A. Backward B. Forward C. Return D. Cutting

D. Cutting

68. In shaper, the tool is fed at the end of _______ stroke . A. Cutting B. Return C. Backward D. Forward

B. Return

69. Generally, shaper tool cuts metal on the ____ strokes. A. Backward B. Cutting C. Forward D. Return

C. Forward

70. Generally, shaper is used for machining ______ surfaces. A. Curve B. Flat C. Rough D. Smooth

B. Flat

71. Brazing requires which of the following? A. Hard solder B. More heat C. Soft solder D. A and B

D. A and B

72 What is/are the primary reason(s) why lead is used in solder? A. It has a high melting B. It is cheap C. It has low melting D. B and C

D. B and C

73. What is the name of the taper shank used on drills? A. Miller B. Starrett C. Morse D. Stanley

C. Morse

74. What is the effect if the melting point of solder is very high? A. Weaker than the solder joint B. Stronger than the solder joint C. Softer than the solder joint D. Harder than the solder joint

B. Stronger than the solder joint

75. Which of the following will likely happen if the angle on a drill is less than 59 degrees? A. The drill will make a larger hole B. The drill will make a smaller hole C. The hole will take longer to drill and more power id\s required to drive the drill D. The drill will not center properly

C. The hole will take longer to drill and more power id\s required to drive the drill

76. What is/are the reason(s) of soda being added to water and is used for cooling instead of plain water? A. It reduces the amount of heat generated B. It improves the finish C. It overcomes rusting D. All of these

D. All of these

77. What will likely happen if the drill’s speed is too high? A. Cut faster B. Cut slower C. Lose is temper D. Not cut

C. Lose is temper

78. The lip clearance of a drill should be approximately how many degrees? A. 20 deg – 25 deg B. 12 deg – 15 deg C. 5 deg – 10 deg D. 15 deg – 20 deg

B. 12 deg – 15 deg

79. If the cutting edges of a drill are cut at different angles: A. The drill will not cut B. The hole will be larger than the drill C. The hole will be smaller than the drill D. None of these

B. The hole will be larger than the drill

80. What is the correct cutting angle on a drill for ordinary work? A. 45 deg B. 59 deg C. 50 deg D. 65 deg

B. 59 deg

81. Shaper tools are made of A. Mild steel B. Cast iron C. High speed steel D. Wrought iron

C. High speed steel

82. For machining cast iron in shaper, the tool is ground with _____ rake angle. A. Negative B. Positive C. 300 D. 450

A. Negative

83. Which of the following best describe a milling machine? A. It is a machine equipment B. It is a machine tool C. It is a machine device D. It is a machine apparatus

B. It is a machine tool

84. The quick return mechanism is slotter is provided in order to save the time in ____ stroke. A. Backward B. Forward C. Cutting D. Return

D. Return

85. An arbor is used to ____ and drive the milling cutter. A. Guide B. Hold C. Control D. Support

B. Hold

86. A puncher slotter is used for ______ stock removal. A. Light B. Heavy C. Small D. Large

B. Heavy

87. Snagging is the form of _____ grinding. A. Hard B. Rough C. Soft D. Smooth

B. Rough

88. Carbide and ceramic tools are ground on ________ grinding wheel. A. Fine grain B. Hard C. Soft D. Diamond

D. Diamond

89. The term _______ means that particle of metal are adhering to the cutting faces of the grinding wheel. A. Loading B. Feeding C. Rating D. Grinding

A. Loading

90. In _____ jaw chuck each jaw can be adjusted independently. A. Five B. Two C. Three D. Four

D. Four

91. A piece of stock 8” long is 4” diameter on one end and 1” diameter on the other end. The taper foot is: A. 4” B. 4 – ¼” C. 4 – ½” D. 4 – 1/16”

C. 4 – ½”

92. A piece of stock 8” long is 3” diameter at one end and 1- ½” diameter at the other end. The taper per inch is: A. ½” B. 3/16” C. ¾” D. 5/16”

B. 3/16”

93. A piece of stock 6” long is 2” diameter at one end and is cut with taper of ½” to the foot. The diameter of the smaller end will be: A. 1 – ½” B. 1 – ¼” C. 1 – ¾” D. 2”

C. 1 – ¾”

94. If a piston ring is to be made 1/64” larger in diameter per inch diameter of the cylinder which it is to fit, the required diameter for a piston ring to fit an 8” cylinder will be: A. 8 – ¼” B. 8 – 3/16” C. 8 – 1/8” D. 8 – 5/32”

C. 8 – 1/8”

95. What is the reason why drill “squeal’s” when cutting? A. Drill being ground improperly B. Insufficient lubrication C. Drill being too hot D. Any of these

D. Any of these

96. In what operation where “center drilling” is to be found? A. Drilling a center in an odd-shaped piece of metal B. Drilling and countersinking with one tool C. Centering with one tool and drilling with another D. Drilling a center in a piece of stock in a drill press

B. Drilling and countersinking with one tool

97. Which of the following defines “pitch” in threads? A. The distance of the full length of the thread B. The distance from a point on one thread to a corresponding point on thenext thread measured parallel to the axis C. The distance from the top of one thread to the bottom of the next thread D. The distance from the bottom to the first thread

B. The distance from a point on one thread to a corresponding point on thenext thread measured parallel to the axis

98. A tool bit for cutting an American National thread should be ground with what angle? A. 450 B. 600 C. 900 D. 300

B. 600

99. An approximate safe rule for cutting new pistons for steam pumps is to allow: A. 0.002” between piston and cylinder for each inch diameter of piston B. 0.001” between piston and cylinder for each inch diameter of piston C. 0.010” between piston and cylinder for each inch diameter of piston D. 0.0001” between piston and cylinder for each inch diameter of piston

B. 0.001” between piston and cylinder for each inch diameter of piston

100. An approximate safe rule for cutting new piston rings for steam pumps is to make the ring: A. 1/32” larger in diameter per inch diameter of cylinder B. 1/16” larger in diameter than that of the cylinder C. 1/16” larger in diameter per inch diameter of cylinder D. 0.005” larger in diameter per inch diameter of cylinder

C. 1/16” larger in diameter per inch diameter of cylinder

1. The ability of substance to exist in more than one lattice form is known as: A. Allotropy B. Grain C. Crystallization D. Diamagnetic

A. Allotropy

2. Properties which describe the behavior of materials under the association of force are called as: A. Physical properties B. Chemical properties C. Mechanical properties D. Electrical properties

C. Mechanical properties

3. The amount of energy per unit volume which the material will possess when subjected to the elastic limit stress is called: A. Bulk modulus B. Modulus of Resilience C. Modulus of elasticity D. Modulus of rigidity

B. Modulus of Resilience

4. _________ means the resistance to penetration A. Hardness B. Strength C. Toughness D. Stiffness

A. Hardness

5. _____ means the increasing hardness and strength by plastic deformation at temperatures lower than the recrystallization range. A. Case hardening B. Strain hardening C. Nitriding D. Stiffness

B. Strain hardening

6. The plastic deformation at temperatures above the recrystallization temperature. A. Hot working B. Cold working C. Normalizing D. Annealing

A. Hot working

7. The plastic deformation at temperatures below the recrystallization temperature. A. Hot working B. Normalizing C. Annealing D. Cold working

D. Cold working

8. A preliminary evaluation of the elevated temperature properties of materials may be secured by means of a A. Stress rupture test B. Creep C. Impact test D. Modulus of rupture

A. Stress rupture test

9. The temperature at which this decrease of impact energy occurs is called A. Recrystallization temperature B. Transition temperature C. Rupture temperature D. Ultimate temperature

B. Transition temperature

10. An intimate mechanical mixture of two or more phases having a definite composition and a definite freezing melting point. A. Allotropy B. Peritectic C. Eutectic D. Protectic

C. Eutectic

11. What is the approximate gap clearance for new piston rings for steam pumps? A. 0.003” for each inch diameter of cylinder B. 0.001” for each inch diameter of cylinder C. 0.010” each inch diameter of cylinder D. 0.050” for each inch diameter of cylinder

A. 0.003” for each inch diameter of cylinder

12. The familiar “3/8 – 16” in machine shop means what? A. 6 pieces, 3/8” long B. Gear with 16 teeth and a 3/8” arbor hole C. 3/8” square, 16” lone D. 3/8” diameter, 16 threads per inch

D. 3/8” diameter, 16 threads per inch

13 The work should be held _______ when using a drill press. A. The hand B. A vise or clamp C. A gloved hand D. Pliers

B. A vise or clamp

14. What is(are) the reason(s) why tapered shanks are used on large drill presses? A. The drill can be centered more easily B. The drill can be easily forced out of the sleeve with a drift C. The shank will not turn when cutting D. The shank can be reground when worn

B. The drill can be easily forced out of the sleeve with a drift

15 Which of the following is not a common drill shank? A. Straight B. Fluted C. Taper D. Bit

B. Fluted

16. What is the usual cutting angle on a drill for drilling mild steel? A. 39 deg. B. 59 deg. C. 49 deg. D. 69 deg.

B. 59 deg.

17. When installing a new grinding wheel, always use: A. Blotting paper gaskets on each side of the wheel B. Copper gasket on each side of the wheel C. Only the steel washers provided with the machine D. None of the above

A. Blotting paper gaskets on each side of the wheel

18. What is the other term for the operation of “truing” a grinding wheel? A. Centering B. Sizing C. Dressing D. Rounding

C. Dressing

19. What tool is used to check external pipe threads? A. Plug gage B. Pitch gage C. Thread gage D. Ring gage

D. Ring gage

20. What tool is used to check internal pipe threads? A. Plug gage B. Pitch gage C. Thread gage D. Ring gage

A. Plug gage

21. The science which deals with the preparation and application of metals and alloys. A. Manufacturing B. Metalloids C. Metallurgy D. Refractories

C. Metallurgy

22. A combination of minerals which can be profitably mined. A. Gangue B. Metal C. Alloy D. Ores

D. Ores

23. The mechanical treatment by which the concentration of ores is increased are called. A. Gravity separation B. Ore dressing C. Distillation D. Sintering

B. Ore dressing

24. Process which involve the reduction of the metal from aqueous solution by replacement or by electrolysis are called A. Pyrometallurgical processes B. Electrometallurgical processes C. Hydrometallurgical processes D. Amalgamation process

C. Hydrometallurgical processes

25. Non-metallic materials of high melting temperature used in the construction of furnaces, crucibles and so forth are called. A. Refractories B. Ceramics C. Insulators D. Grate

A. Refractories

26. The flux and gangue when in proper proportions will have a melting temperature considerably lower than that of either one and the resulting combination is called: A. Lime B. Residue C. Slag D. Refractories

C. Slag

27. An iron-bearing slate or chert in the form of compact siliceous rock. A. Taconite B. Hematite C. Magnetite D. Limonite

A. Taconite

28. A mechanical mixture of very pure iron and a silicate slag A. Bronze B. Brass C. Cast iron D. Wrought iron

D. Wrought iron

29. An alloy of iron and carbon in which the carbon content does not exceed 1.7 percent A. Brass B. Steel C. Babbit D. Bronze

B. Steel

30. The structure formed when transformation occurs at temperature down to the knee of the curve A. Pearlite B. Bainite C. Martinsite D. Limonite

A. Pearlite

31. Which of the following is used to cut gears? A. gear cutter B. Gear center C. Gear hob D. Gear threader

C. Gear hob

32. If you use a dry grinding wheel for sharpening tool bits, dip the end of the bit in water frequently to prevent: A. Burning your fingers B. Annealing the cutting edge of the bit C. Hardening of the tip D. The tip from crystallizing

B. Annealing the cutting edge of the bit

33. A piece of tool steel held against an emery wheel will give off: A. White sparks with stars on the ends B. Yellow sparks C. No sparks D. Green sparks

A. White sparks with stars on the ends

34. Grinding wheels have a range of soft to hard abrasive materials depending on the use. Most manufacturers letter their wheels from A to Z. Which of the following mark represents the hardest? A. E B. Z C. A D. E 1

B. Z

35. What is the main difference between a planer and a shaper? A. The planer has an offset table and the shaper has a horizontal table B. The shaper has a rotting table and the planer has a horizontal table C. The table of a planer has a reciprocating motion past the tool head while the table of the shaper is stationary and the tool head has a reciprocating motion D. One is larger than the other

C. The table of a planer has a reciprocating motion past the tool head while the table of the shaper is stationary and the tool head has a reciprocating motion

36. One of the factors involved in the choice of a grinding wheel is: A. The kind of material to be ground B. The amount of stock to be removed C. The kind of finish required D. All of these

D. All of these

37. The “tang” of a file is the part that: A. Does the cutting B. Has no teeth C. Fits into the handle D. Is opposite the handle

C. Fits into the handle

38. In general, files are divided into two classes called: A. Single-cut and double-cut B. Rough and smooth C. Fine and coarse D. Heel and sizes

A. Single-cut and double-cut

39. The length of a file is measured from: A. End to end B. Point to end C. Point to heel D. Heel to end

C. Point to heel

40. The process producing a hard surface in a steel having a sufficiently high carbon content to respond to hardening by rapid cooling of the surface. A. Flame hardening B. Induction hardening C. Cyaniding D. Carburizing

A. Flame hardening

41. It is one in which some elements other than carbon has been added to improve change the physical properties. A. Low carbon steel B. Alloy steel C. Medium carbon steel D. High carbon steel

B. Alloy steel

42. SAE 1020 steel is a carbon steel containing _______ percent carbon. A. 20% B. 0.20% C. 10% D. 0.10%

B. 0.20%

43. SAE 2317 steel is a nickel steel alloy containing ____ percent nickel. A. 2% B. 3% C. 1% D. 7%

B. 3%

44. AISI C1095 designates that it is a basic open hearth carbon steel having ____ percent carbon. A. 5% B. 9% C. 95% D. 0.95%

D. 0.95%

45. Molybdenum steels are painted ________. A. Green B. Blue C. Red D. Orange

A. Green

46. Used for members of intricate shape that would be difficult to manufacture by other methods. A. Forging B. Casting C. Extruding D. Hot working

B. Casting

47. AISI means: A. American Iron and Steel Institute B. African Iron and Steel Institute C. Aluminum Iron and Steel Institute D. American Investment for Steel Industry

A. American Iron and Steel Institute

48. SAE means: A. Society of American Engineers B. Society of Automotive Engineers C. Society of Australian Engineers D. Society of African Engineers

B. Society of Automotive Engineers

49. Which of the following metals increases the strength without sacrificing the ductility of the carbon steels? A. Brass B. Nickel C. Bronze D. Copper

B. Nickel

50. Which of the following where “pillar” files are used? A. Filling slots B. Filling against a shoulder C. Filling keyways D. Any of these

D. Any of these