Drilling and Reaming MCQ - Machinist(Set-1) with Answers

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

Answer is:

The bored hole has insufficient reaming allowance

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

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 ?

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 ?

44) On drilling machine, which process is known as reaming ?

Answer is:

Smoothly finishing and accurately sizing a drilled hole

Explanation:

The process of enlarging and finishing previously drilled holes to accurate size using a multi-point cutting tool is called as Reaming. The Tool used for this process is called Reamer.