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
The effective stress in wire ropes during normal working is equal to the stress due to

Axial load plus stress due to bending
Acceleration/retardation of masses plus stress due to bending
Bending plus stress due to acceleration/retardation
Axial load plus stress due to acceleration/retardation

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