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

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

36) Which one of the following machine reamers is used to correct the misalignment between the reamer axis and the work axis ?

Answer is:

Floating blade reamer

37) Counter-boring is done for

Answer is:

Accommodating socket head screws

Explanation:

Counter boring is the operation of enlarging the end of a hole using a tool called counterbore. Counter boring is done for accommodating socket head screws.

38) Which is the possible cause when a twist drill produces a rough hole on the job ?

Answer is:

Feed rate is too high

39) Which angle of counter sink drill you will select for seating counter sink type A (IS : 3406:1986) ?

Answer is:

Counter sink drill 90 Degree

40) What will be the result if the clearance angle in drill is increased ?

Answer is:

36) Which one of the following machine reamers is used to correct the misalignment between the reamer axis and the work axis ?

Floating blade reamer

37) Counter-boring is done for

Accommodating socket head screws

38) Which is the possible cause when a twist drill produces a rough hole on the job ?

Feed rate is too high

39) Which angle of counter sink drill you will select for seating counter sink type A (IS : 3406:1986) ?

Counter sink drill 90 Degree

40) What will be the result if the clearance angle in drill is increased ?

Weak cutting edge