E10_2

Question 1

51. How do you call the velocity of the chip relative to the workpiece?

A. Cutting speed
B. Chip velocity
C. Shear velocity
D. Rake velocity

Answer 1

C. Shear velocity

Question 2

52. Which of the following is the primary parameter affecting the cutting energy requirement?

A. Compressive stress
B. Shear stress
C. Torsional stress
D. Bending stress

Answer 2

B. Shear stress

Question 3

53. The energy expended per unit volume removed is known as:

A. Specific cutting energy
B. Metal removal rate
C. Cutting horsepower
D. Absolute cutting energy

Answer 3

A. Specific cutting energy

Question 4

54. A plain carbon steel with approximately 0.9 to 1.3% carbon, which has been hardened and tempered.

A. Carbon tool steel
B. High speed steel
C. Low speed steel
D. Medium speed steel

Answer 4

A. Carbon tool steel

Question 5

55. Contains tungsten or chromium and retains its hardness up to approximately 600 C.

A. Carbon tool steel
B. High speed steel
C. Low speed steel
D. Medium speed steel

Answer 5

B. High speed steel

Question 6

56. Cast non-ferrous tools are brittle but can be used to approximately:

A. 1000 C
B. 925 C
C. 1500 C
D. 750 C

Answer 6

B. 925 C

Question 7

57. Which of the following is produced through powder metallurgy from non-ferrous metals?

A. Sintered carbides
B. Ceramic tools
C. Diamonds
D. Cast non-ferrous

Answer 7

A. Sintered carbides

Question 8

58. Ceramic tools operate.

A. Below 2000 F
B. Below 2200 F
C. Above 2000 F
D. Below 2200 F

Answer 8

A. Below 2000 F

Question 9

59. Which of the following is manufactured from aluminum oxide have the same expected life as carbide tools but can operate at speeds from two or three times higher? They operate below 1100 C.

A. Sintered carbides
B. Ceramic tools
C. Diamonds
D. Cast non-ferrous

Answer 9

B. Ceramic tools

Question 10

60. Which of the following are used in specific case, usually in finishing operations?

A. Sintered carbides
B. Ceramic tools
C. Diamonds
D. Cast non-ferrous

Answer 10

C. Diamonds

Question 11

61. A metal which has a high electrical cinductivity but should not be used for high temperature.

A. Silicon
B. Zinc
C. Chrome Alloy
D. Carbide

Answer 11

B. Zinc

Question 12

62. It improves red hardness of steel.

A. Chromium
B. Cobalt
C. Boron
D. Lead

Answer 12

B. Cobalt

Question 13

63. What is the SAE specification number of molybdenum?

A. SAE 2xxx
B. SAE 3xxx
C. SAE 4xxx
D. SAE 5xxx

Answer 13

C. SAE 4xxx

Question 14

64. Which does not belong to the group?

A. SAE
B. AISI
C. SEA
D. ASTM

Answer 14

C. SEA

Question 15

65. It is the ability of the material to resist deformation under stress.

A. Plasticity
B. Stiffness
C. Toughness
D. All of these

Answer 15

B. Stiffness

Question 16

66. Which of the following is not a structural class of steel?

A. High speed steel
B. Tool and die
C. Low carbon
D. High carbon

Answer 16

B. Tool and die

Question 17

67. Continuous stretching under load even if the stress is less than the yield point is known as:

A. Plasticity
B. Elasticity
C. Creep
D. Ductility

Answer 17

C. Creep

Question 18

68. Killed steel is always associated with:

A. Silicon
B. Manganese
C. Phosphorus
D. Sulfur

Answer 18

A. Silicon

Question 19

69. The good deoxidizer in steel meeting.

A. Manganese
B. Silicon
C. Aluminum
D. All of these

Answer 19

D. All of these

Question 20

70. Good stabilizer in stainless steel is:

A. Columbium
B. Titanium
C. Tantalum
D. All of these

Answer 20

D. All of these

Question 21

71. Used as a finishing operation since very fine and imensionally accurate surface can be produced.

A. Grinding
B. Snagging
C. Honing
D. Lapping

Answer 21

A. Grinding

Question 22

72. Describes very rough grinding, such as that performed in foundries to remove gates, fins and risers from castings.

A. Grinding
B. Snagging
C. Honing
D. Lapping

Answer 22

B. Snagging

Question 23

73. Grinding in which very little material, 0.001 to 0.005 in. is removed.

A. Grinding
B. Snagging
C. Honing
D. Lapping

Answer 23

C. Honing

Question 24

74. Which of the following is not a measuring device?

A. Orsat analyzer
B. Thermometer
C. Micrometer caliper
D. Divider

Answer 24

D. Divider

Question 25

75. A plain carbon steel with approximately 0.9 to 1.3% carbon which has been hardened and tempered. A. Carbon tool steel B. Cast non-ferrous C. High speed steel D. Diamond

Answer 25

A. Carbon tool steel

Question 26

76. Carbon tool steel can be given a good edge, but is restricted to use below: A. 400 to 600 F B. 300 to 400 F C. 700 to 800 F D. 800 to 1000 F

Answer 26

A. 400 to 600 F

Question 27

77. Which of the following contains tungsten or chromium and retains its hardness up to approximately 1100 F, A property known as red hardness. A. ceramic tools B. Diamonds C. High speed steel D. Carbon and steel

Answer 27

C. High speed steel

Question 28

78. Cast non-ferrous tools are brittle but can be used up to approximately: A. 1700 F B. 2200 F C. 2000 F D. 600 F

Answer 28

A. 1700 F

Question 29

79. They are produced through powder metallurgy from non-ferrous metals. A. Diamonds B. Cast non-ferrous C. Ceramic tools D. Sintered carbides

Answer 29

D. Sintered carbides

Question 30

80. Sintered carbide operates at cutting speeds how many times as fast as HSS tools. A. 2 to 5 B. Thrice C. 5 to 7 D. Twice

Answer 30

A. 2 to 5

Question 31

81. Metals are conductive because: A. The electrons are loosely bound to the nuclei and therefore mobile B. Having characteristics luster C. They are on the left side of the periodic table D. They have extra electrons as exhibited by normally possible balance state

Answer 31

A. The electrons are loosely bound to the nuclei and therefore mobile

Question 32

82. The yield strength of the rectangular yellow brass 65 to 70% Cu, 30 to 35% Zn can be increased / improved by ____. A. Cold working B. Tempering C. Shill casting D. Heat treatment

Answer 32

A. Cold working

Question 33

83. Used as cast condition steel casting with carbon content less than _____ % C. A. 0.26 B. 0.15 to 0.18 C. 0.20 D. 0.25

Answer 33

C. 0.20

Question 34

84. Liners are normally made of: A. Cast iron B. Alloyed bronze C. Alloyed steel D. Alloyed aluminum

Answer 34

A. Cast iron

Question 35

85. A furnace used in melting non – ferrous metals is called: A. Cupola furnace B. Crucible furnace C. Induction furnace D. Tempering furnace

Answer 35

B. Crucible furnace

Question 36

86. A furnace used in melting ferrous metals. A. Annealing furnace B. Tempering furnace C. Induction furnace D. Normalizing furnace

Answer 36

C. Induction furnace

Question 37

87. All are associated with standard material specified except ______. A. American Iron and Steel Institute B. Society of Automotive Engineers C. Southeast Asia Iron and Steel Institute D. American Society for Testing Materials

Answer 37

C. Southeast Asia Iron and Steel Institute

Question 38

88. The ability of metal to be deformed considerably without rupture is called: A. Malleability B. Elasticity C. Ductility D. Plasticity

Answer 38

D. Plasticity

Question 39

89. Permanent deformation or strain may occur without fracture is called: A. Malleability B. Elasticity C. Ductility D. Plasticity

Answer 39

D. Plasticity

Question 40

90. An alloy that improves strength of steel at high temperature application. A. Tungsten B. Molybdenum C. Chromium D. All of these

Answer 40

D. All of these

Question 41

91. Which of the following is manufactured from aluminum oxide have the same expected life as carbide tools but can also operate at speeds from two to three times higher? A. Ceramic tools B. High speed steel C. Diamonds D. Carbon tool steel

Answer 41

A. Ceramic tools

Question 42

92. Soluble in the presence of high temperature iron used in specific cases, usually in finishing operations. A. Ceramic tools B. Diamonds C. High speed steel D. Aluminum

Answer 42

B. Diamonds

Question 43

93. Percent of the heat developed in cutting is due to friction between the tool and the workpiece is: A. Approximately 50% B. Approximately 10% C. Approximately 25% D. Approximately 75%

Answer 43

C. Approximately 25%

Question 44

94. Which of the following is used to reduce friction, remove heat, heat chips and protect against corrosion. A. Water vapor B. Carbon C. Air D. Cutting fluid

Answer 44

D. Cutting fluid

Question 45

95. Which of the following is a good heat remove, but it promotes rust? A. Air B. Kerosene C. Carbon dioxide D. Water

Answer 45

D. Water

Question 46

96. Addition of _____ to water produces an efficient, inexpensive cutting fluid that does not promote rusting. A. Sal soda B. Kerosene lubricants C. Straight cutting oils D. Air

Answer 46

A. Sal soda

Question 47

97. It reduces friction and do not cause rust but are less efficient of heat removal than water. A. Sal soda B. Kerosene lubricants C. Straight cutting oils D. Air

Answer 47

C. Straight cutting oils

Question 48

98. Taylor’s equation relates cutting speed v and tool life T for particular combination of tool and workpiece, VTn = constant. This equation is also known as: A. Flank wear B. Nose failure C. Crater wear D. Tool life

Answer 48

D. Tool life

Question 49

99. After any cutting standard grinding operation, the surface of a workplace will consist of: A. Smear metal B. Ultrafinishing C. Superfinishing D. Centerless grinding

Answer 49

A. Smear metal

Question 50

100. A method that does not require clamping, chucking or holding round workpieces. A. Centerless grinding B. Laser machining C. Chemical milling D. Ultrafinishing

Answer 50

A. Centerless grinding