Twist drills are made of Options: A . &nbspHigh speed steel B . &nbspCarbon steel C . &nbspStainless steel D . &nbspEither (A) or (B)

Twist drills are made of

Question

Twist drills are made of

Options:

A . High speed steel

B . Carbon steel

C . Stainless steel

D . Either (A) or (B)

Answer: Option D

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Question 1. The cutting speed for drilling aluminium, brass and bronze with high speed steel drills varies from....

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