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CUTTING TOOLS AND OPERATIONS, FITTER TRADE THEORY, FITTER

ITI || CUTTING TOOLS AND OPERATIONS OBJECTIVE QUESTIONS IN ENGLISH




CUTTING TOOLS AND OPERATIONS, FITTER TRADE THEORY, FITTER , CUTTING TOOLS

51.  Which among the following is NOT the cause for loading of grinding wheel?
(a) Dense structure
(b) Feed too fine
(c) Wheel speed more than recommended
(d) Proper grain size and grade of wheel.
Ans. D

52. Which one the following reamers can adjust itself in case of slight misalignment when fitted on a tailstock?
(a) Parallel reamer
(b) Taper reamer
(c) Adjustable reamer
(d) Floating reamer
Ans. D

53. How does a hand reamer differ from a machine reamer?
(a) Larger bevel lead for the cutting edges
(b) More number of cutting teeth
(c) Less number of cutting teeth
(d) Unequal spacing of cutting edges
Ans. A

54. Which one of the following is used to hold the straight shank drill having diameter less than 12 mm ?
(a) Sleeve
(b) Socket
(c) Drill chuck
(d) Drill drift
Ans. C

55. The rate of feed depends upon
(a) finish required
(b) material of tool (drill)
(c) material to be drilled
(d) all the above
Ans. D

56. Which among the following is NOT the factor for selection of cutting speed and feed for reaming a hole with a machine reamer ?
(a) Material of the job.
(b) Material of the reamer.
(c) Diameter (size) of the reamer.
(d) Rigidity of the fixture.
Ans. D

57. A nut is to be made for a screw of M10x1.5. What should be the size of drilled hole?
(a) 8.5 mm
(b) 9.0 mm
(c) 9.5 mm
(d) 10.0 mm
Ans. A

58. Which among the following factors will NOT influence the selection of the cutting speed while performing operation on drilling machine?
(a) Width of job
(b) Material of job
(c) Material of tool
(d) Operation to be performed
Ans. A

59. What is the cause of a grinding wheel becoming glazed in a grinding machine ?
(a) Grinding wheel's grade is too soft
(b) Grinding wheel's grade is too large
(c) Feed and traverse are less
(d) Grinding wheel's speed is too high and work speed is low
Ans. D

60. Which among the following is an artificial abrasive?
(a) Aluminum oxide
(b) Emery
(c) Diamond
(d) Corundum
Ans. A

61. The angle of drill grinding gauge is
(a) 59°
(b) 118°
(c) 121°
(d) 124°
Ans. C

62. A die nut is nothing but
(a) a nut forged by using dies
(b) a die in the shape of a nut
(c) a nut for tightening the die in the die stock
(d) a die which is used for cutting threads in nuts
Ans. B

63. A warding file is similar to
(a) flat file but uniform in width
(b) hand file but narrow in width
(c) flat file but thinner in thickness
(d) flat file but thinner and uniform in thickness
Ans. C

64. The taper shank of a drill of 20 mm diameter has
(a) MT-1 taper
(b) MT-2 taper
(c) MT-3 taper
(d) MT-4 taper
Ans. B

CUTTING TOOLS AND OPERATIONS, FITTER TRADE THEORY, FITTER , CUTTING TOOLS

65. For grinding carbide materials
(a) Aluminum oxide wheel is used
(b) Silicon carbide wheel is used
(c) Diamond wheel is used abrasive
(d) Corundum wheel is used
Ans. B

66. Hacksaw blades with fine-pitched teeth are more effective on
(a) thin section metal
(b) soft metals
(c) broad section metals
(d) non-metals
Ans. A

67. When threading a blind hole, the third (finisher) tap is used
(a) to thread the hole with full threads up to the bottom
(b) to start the threads
(c) after the first (rougher) tap
(d) to form the threads easily
Ans. A

68. In case of a single cut file, the teeth are cut on the file face at a nangle of
(a) 45° to the centre line of the file
(b) 60° to the centre line of the file
(c) 75° to the centre line of the file
(d) 80° to the centre line of the file
Ans. B

69. A short reamer with an axial hole used with an arbor or mandrel is called
(a) parallel reamer
(b) adjustable reamer
(c) expansion reamer
(d) chucking reamer
Ans. D

70. The material of twist drill is generally
(a) H.S.S.
(b) Carbide steel
(c) Diamond
(d) Cast steel
Ans. A

71. The best position to hold the job in the vice when filing is
(a) eye level
(b) shoulder level
(c) elbow level
(d) arm level
Ans. C

72. Which one among the following is NOT the cause for a broken tap while tapping?
(a) The tap has coarse threads
(b) Too much downward pressure is applied
(c) Cutting oil is not used
(d) Smaller tap drill size is used
Ans. A

73. What will happen if the job is loosely fitted between centers in cylindrical grinding?
(a) The job will be out of round
(b) The job will be oversized
(c) The job will be thrown out
(d) The job will not rotate
Ans. A

74. The cause for glazing of a grinding wheel is
(a) grain size is too fine
(b) Wheel is hard.
(c) wheel speed is too fast
(d) 'A' and 'B' both
Ans. D

75. Which one of the following bonds is most commonly used on grinding wheels?
(a) Vitrified
(b) Rubber
(c) Shellac
(d) Silicate
Ans. A
76. A grinding wheel marked with 'C' is made with the
(a) Aluminum oxide
(b) Silicon carbide
(c) Diamond
(d) Corundum
Ans. B

77. As per Indian Standards the grain size '46' comes under the
group
(a) coarse
(b) medium
(c) fine
(d) very fine
Ans. B

78. As per Indian Standards the 'M' grade of grinding wheel comes under the group
(a) soft
(b) medium
(c) hard
(d) very hard
Ans. B

CUTTING TOOLS AND OPERATIONS, FITTER TRADE THEORY, FITTER , CUTTING TOOLS

79. The symbol conventionally used for resinoid bond is
(a) B
(b) V
(c) R
(d) O
 Ans. A

80. A grinding wheel is marked: 51 A 46 L 5 V - 23. Here what does
5 denote?
(a) Kind of bond
(b) Structure
(c) Kind of abrasive
(d) Grain size
Ans. B

81. Balancing of wheel is done to
(a) make the sides of the wheel parallel
(b) make the outside diameter concentric with the bore
(c) equalize the weight in every position of the wheel
(d) none of the above
Ans. C

82. Grinding fluids are used to
(a) reduce the friction between the wheel face and the job
(b) wash away chips
(c) prevent loading of wheel
(d) all of the above.
Ans. D

83. Taps are re-sharpened by grinding
(a) flutes
(b) threads
(c) diameter
(d) relief
Ans. A

84. The tapping hole should be
(a) larger than the tap size
(b) smaller than the tap size
(c) equal to the tap size
(d) equal to the core (minor) diameter of the tap
Ans. D

85. A rough file is used
(a) on irregular jobs
(b) to reduce the metal rapidly
(c) on wood
(d) if smooth file is not available
Ans. B
86. Tap water is NOT preferred as coolant while drilling. What is
the reason for this?
(a) Insufficient cooling effect
(b) Danger of corrosion
(c) Decrease in cutting action of drill
(d) Quick evaporation of water
Ans. B

87. A die is
(a) external thread cutting tool
(b) internal thread cutting tool
(c) square thread cutting tool
(d) acme thread cutting tool
Ans. A

88. A groove is being chipped by a chisel. How will you avoid the
metal breaking off as a lump, when reaching the end of the groove?
(a) By chipping with light force when reaching the end
(b) By using soluble oil
(c) By holding the chisel with less inclination
(d) By chipping the end portion from opposite side.
Ans. D
89. You have to cut an aluminum block to smooth finish. Which one
of the following cut of file is most suitable?
(a) Single cut
(b) Double cut
(c) Rasp cut
(d) Circular cut
Ans. A
90. For cylindrical grinding a small diameter work with fairly large
wheel, which among the following grades of wheel should be used ?
(a) Soft
(b) Medium
(c) Hard
(d) Very soft
Ans. C
91. The teeth of hacksaw blade are set to
(a) provide clearance for the blade
(b) prevent jamming and breakage of blade
(c) make the kerfs wider than the blade
(d) all of the above
Ans. D
92. Which one the following drilling machines is used for drilling
holes where electricity is not available?
(a) Bench drilling machine
(b) Pillar drilling machine
(c) Radial drilling machine
(d) Ratchet drilling machine
Ans. D

93. Which of the following reamers is particularly suitable for reaming holes having key way grooves?
(a) Straight fluted reamer
(b) Helical fluted reamer
(c) Taper reamer
(d) Pilot reamer
Ans. B

94. Which one of the following is NOT the cause for glazing of wheel?
(a) Improper dressing of wheel
(b) Dirty coolant
(c) Hard wheel in place of soft wheel
(d) Feed rate is too fine
Ans. A

95. The effect of using a glazed or loaded wheel is
(a) . (a) more heat generation
(b) poor surface finish
(c) excessive cutting pressure between the wheel face and the work surface
(d) all the above
Ans. D

96. Which among the following is NOT the cause for loading of grinding wheel?
(a) Dense structure
(b) Feed too fine
(c) Wheel speed more than recommended
(d) Proper grain size and grade of wheel.
Ans. D

97. Which one the following reamers can adjust itself in case of slight misalignment when fitted on a tailstock?
(a) Parallel reamer
(b) Taper reamer
(c) Adjustable reamer
(d) Floating reamer
Ans. D

98. How does a hand reamer differ from a machine reamer?
(a) Larger bevel lead for the cutting edges
(b) More number of cutting teeth
(c) Less number of cutting teeth
(d) Unequal spacing of cutting edges
Ans. A

99. What is the cause of a grinding wheel becoming glazed in a grinding machine ?
(a) Grinding wheel's grade is too soft
(b) Grinding wheel's grade is too large
(c) Feed and traverse are less
(d) Grinding wheel's speed is too high and work speed is low
Ans. D

100. What is the cause of a grinding wheel becoming glazed in a grinding machine ?
(a) Grinding wheel's grade is too soft
(b) Grinding wheel's grade is too large
(c) Feed and traverse are less
(d) Grinding wheel's speed is too high and work speed is low
Ans. D
CUTTING TOOLS AND OPERATIONS, FITTER TRADE THEORY, FITTER CUTTING TOOLS AND OPERATIONS, FITTER TRADE THEORY, FITTER Reviewed by ITI STUDY CENTER on June 02, 2020 Rating: 5

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