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Fitter Set-1
Drilling and Reaming
41

Drilling and Reaming MCQ with Answers

41) A reamed hole has patches of poor finish. Which one of the following is the cause for this defect ?

The bored hole has insufficient reaming allowance

Excessive cutting speed

Wrong selection of the reamer for the job

Insufficient coolant supply

Answer is:

The bored hole has insufficient reaming allowance

Drilling and Reaming MCQ with Answers

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Related Drilling and Reaming MCQ with Answers

42) During drilling it is observed that chip is flowing out continuously through one lip only. The possible reason is :

Unequal lip angle

Excessive point angle

Unequal clearance angle

Cutting angle is not according to the metal being drilled

Answer is:

Unequal lip angle

43) Which one of the following operations can be used for removing burrs formed at the edge of the hole while drilling ?

Countersinking

Deburring

Spot-facing

Chamfering by filing

Answer is:

Deburring

Explanation:

Deburring is the process of removing the small imperfections known as burrs from machined metal products

Which one of the following operations can be used for removing burrs formed at the edge of the hole while drilling ?

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