The time taken to drill a hole through a 25 mm thick plate with the drill rotating at 300 rpm and moving at a feed rate of 0.25 mm/rev is

The time taken to drill a hole through a 25 mm thick plate with the dr

1.	The time taken to drill a hole through a 25 mm thick plate with the drill rotating at 300 rpm and moving at a feed rate of 0.25 mm/rev is
A.	10 sec
B.	20 sec
C.	60 sec
D.	100 sec
Answer» C. 60 sec

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The time taken to drill a hole through a 25 mm thick plate with the drill rotating at 300 rpm and moving at a feed rate of 0.25 mm/rev is

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