Machine Design
The shear stress in a beam varies from zero at the outer fibers to a maximum at the________.

Upper surface
None of these
Lower surface
Neutral surface

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Machine Design
In case of V belt drive

None of these
The belt should not touch the bottom of groove in the pulley
The belt should touch the bottom of groove in the pulley
The belt should not touch the sides of groove in the pulley

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

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

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