Machine Design
Cold working

Decreases the fatigue strength
Increases the fatigue strength
Alone has no influence on fatigue strength
Has no influence on fatigue strength

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Machine Design
For same pulley diameters, center distance, belt speed and belt and pulley materials,

Crossed belt drive transmits more power than open belt drive
Open and crossed belt drives transmit same power
Open belt drive transmits more power than crossed belt drive
Power transmission does not depend upon open and crossed types of constructions

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