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Fitter
Fitter Set-1
Lathe Operations
31

Lathe Operations MCQ with Answers

31) Which one of the following operations is NOT done on a workpiece held in-between centres ?

Knurling

Undercutting by plunging

Thread cutting

Parting off

Answer is:

Parting off

Explanation:

Parting off is done when the work-piece is held in the Chuck only.

Which one of the following operations is NOT done on a workpiece held in-between centres ?

Lathe Operations MCQ with Answers

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32) Which one of the following methods of catching the threads consumes more time when cutting odd pitch threads ?

Using thread-chasing dial

Reversing the machine

Marking the work holding device and lead screw

Pre-determined travel of the carriage

Answer is:

Marking the work holding device and lead screw

33) A hole is drilled in a lathe by using a Dia 10 mm straight shank drill held in a drill chuck. After a short distance of the drill travel, it rotates along with the work. Which one of the following is the cause for this defect ?

Chips getting clogged

Centre not aligned

Spotting at the centre not done

Feeding by tailstock hand wheel is too slow

Answer is:

Chips getting clogged

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

Boring tool springs its travel

Coolant is not applied with force

Tool set below centre

No secondary clearance ground on the front cutting edge

Answer is:

Boring tool springs its travel

35) 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 ?

The angle of chamfering is not correct

The chamfering tool not set square to the work axis

The work face not running true

The overhang of the tool is too much

Answer is:

The work face not running true

Lathe Operations MCQ with Answers

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31) Which one of the following operations is NOT done on a workpiece held in-between centres ?

Parting off

Lathe Operations MCQ with Answers

Related Lathe Operations MCQ with Answers

32) Which one of the following methods of catching the threads consumes more time when cutting odd pitch threads ?

Marking the work holding device and lead screw

33) A hole is drilled in a lathe by using a Dia 10 mm straight shank drill held in a drill chuck. After a short distance of the drill travel, it rotates along with the work. Which one of the following is the cause for this defect ?

Chips getting clogged

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

Boring tool springs its travel

35) 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 ?

The work face not running true

Lathe Operations MCQ with Answers