Machine Design
The creep in the belt is due to

Unequal extensions in the belt due to tight and slack side tensions
Material of belt
Effect of temperature on belt
Stresses beyond elastic limit of belt material

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Machine Design
In case of V belt drive

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

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