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Materials Science and Manufacturing Engineering Miscellaneous
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Materials Science and Manufacturing Engineering Miscellaneous
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Materials Science and Manufacturing Engineering
Materials Science and Manufacturing Engineering Miscellaneous
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
10 sec
20 sec
60 sec
100 sec
Correct Option:
B
T =
L
=
25100
=
1
min
fN
0.25 × 300
3
T = 20 sec
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