Machine Design
When the belt speed increases

Power transmitted increases to a maximum value and then decreases
Power transmitted remains the same
Power transmitted decreases
Power transmitted increases

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Machine Design
In case of thick cylinders, the tangential stress across the thickness of cylinder is

Maximum at the outer surface and zero at the inner surface
Maximum at the outer surface and minimum at the inner surface
Maximum at the inner surface and zero at the outer surface
Maximum at the inner surface and minimum at the outer surface

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