Question: For same angular rotation and same shear stress if the diameter of a shaft subjected to torque is doubled, the horse power P can

For same angular rotation and same shear stress if the diameter of

For same angular rotation and same shear stress if the diameter of a shaft subjected to torque is doubled, the horse power P can be increased to (A) 16P (C) 4P (B) 8P (D) 2P

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