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ITI
Fitter
Fitter Set-2
Drilling
66

Drilling MCQ with Answers

66) What is the drill hole size for 16 mm reamer?

15.75 mm

15.50 mm

14.65 mm

16 mm

Answer is:

15.75 mm

Drilling MCQ with Answers

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Related Drilling MCQ with Answers

67) What is the size of drilled hole for reaming, Dia 10 mm?

8.5 mm

9.75 mm

10.00 mm

10.25 mm

Answer is:

9.75 mm

68) Why drilled holes are over size than drill dia?

Feed ratio is more

Cooling is in effective

Insufficient clearance angle

Unequal length of cutting edge

Answer is:

Unequal length of cutting edge

69) What is the counter sink angle of chamfering in the end of drilled hole for threading?

75 Degree

80 Degree

90 Degree

120 Degree

Answer is:

120 Degree

70) Why centre screw is provided in the die stock?

To tighten the die

To adjust the depth of cut

To adjust the dia of internal thread

To adjust the dia of external thread

Answer is:

To adjust the depth of cut

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