A drilling machine has spindle speeds from 70 to 800 rpm in eight steps. The fourth speed from the lowest will be
A) 245 rpm
B) 340 rpm
C) 175 rpm
D) 300 rpm
E) 198 rpm
Correct Answer:
Verified
Q51: Drills are usually made of
A)Diamonds
B)Carbon steel
C)High speed
Q52: In order to lower the cutting forces
Q53: Tumber gears are used on lathes to
A)Reduce
Q54: A triple threaded worm is in mesh
Q55: Gun metal is an alloy containing
A)Copper, lead,
Q57: A 20 mm diameter international metric thread
Q58: The angular clearance provided on dies is
Q59: Last element in the tool signature is
A)nose
Q60: In case of cast iron castings, the
Q61: With increasing cutting velocity total time for
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