105) The helical grooves which extended to the full length of the drill body are called

Answer is:

flutes

Explanation:

Flutes are the spiral grooves which run to the length of the drill. The flutes helps to
1. To form the cutting edges
2. To curl the chips and allow these to come out
3. The coolant to flow to the cutting edge.

The helical grooves which extended to the full length of the drill body are called

Manufacturing Technology MCQ with Answers

For more MCQ's Click Here

106) The number of helical grooves which are present in standard twist drill is

Answer is:

One

107) A reamer is used to

Answer is:

Correct the size and roundness of the hole

108) Counter boring is the operation of

Answer is:

Enlarging the end of a hole

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.