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Machinist
Machinist Set-1
Lathe
163

Lathe MCQ - Machinist(Set-1) with Answers

163) The included angle of the countersinking portion of a centre drill of type 'B' used for protecting the centre hole is

75 Degree

90 Degree

100 Degree

120 Degree

Answer is:

120 Degree

Lathe MCQ - Machinist(Set-1) with Answers

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Related Lathe MCQ - Machinist(Set-1) with Answers

164) The taper ratio of Jarno taper is

1 in 10

1 in 15

1 in 20

1 in 25

Answer is:

1 in 20

165) The rollers used in the roller box turning tool holders are

convex shaped

concave shaped

slightly tapered with smaller end towards work face

slightly tapered with smaller end towards turret face

Answer is:

convex shaped

166) Which one of the following is a remedial measure to prevent the tool cutting edge chipping off ?

Increase feed rate

Reduce cutting speed

Decrease nose radios

Use negative top rake

Answer is:

Use negative top rake

Which one of the following is a remedial measure to prevent the tool cutting edge chipping off ?

Lathe MCQ - Machinist(Set-1) with Answers

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