Lathe MCQ - Machinist(Set-1) with Answers

Lathe MCQ - Machinist(Set-1) with Answers

126) While power feed is engaged when turning taper by using taper turning attachment, it is noticed that for short distance parallel turning takes place due to certain defect. Which one of the following is the cause for this defect ?

Answer is:

Play between the sliding units

127) Unusual sound is heard during rough boring a large diameter hole. Which one of the following statements is the cause for this defect ?

Answer is:

Boring tool springs its travel

128) A fixed steady rest is used to

Answer is:

support long workpiece held in chuck, to perform operations at the overhanging end

A fixed steady rest is used to

129) A workpiece is chamfered to remove burrs. It is observed that the chamfer width is not uniform throughout the periphery of chamfer on the workpiece. Which one of the following is the cause for this defect ?

Answer is:

The work face not running true

130) The size of the centre drill is selected on the basis of the

Answer is:

diameter of the workpiece

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