If the diameter of a shaft subjected to torque alone, is doubled, then the horse power can be increased to

If the diameter of a shaft subjected to torque alone, is doubled, then

1.	If the diameter of a shaft subjected to torque alone, is doubled, then the horse power can be increased to
A.	16
B.	8
C.	4
D.	2
Answer» C. 4

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If the diameter of a shaft subjected to torque alone, is doubled, then the horse power can be increased to

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