31) The material of twist drill is generally
Answer is:
H.S.S.
Related Drilling and Reaming MCQ - Machinist(Set-1) with Answers
Answer is:
Ratchet drilling machine
Explanation:
Where electricity is not available, Ratchet drilling machine is used for drilling holes.
Answer is:
Helical fluted reamer
Explanation:
Straight fluted reamers are useful for general reaming work. Helical fluted reamers are particularly suitable for reaming holes with keyway grooves or special lines cut into them. The helical flutes will bridge the gap and reduce binding and chattering.
Answer is:
Floating reamer
Explanation:
Floating reamer can adjust itself in case of slight misalignment when fitted on a tail-stock.
Answer is:
Larger bevel lead for the cutting edge
