Machine Design
The design of pin of a rocker arm of an I.C. engine is based on

All of these
Bending failure
Shearing failure
Bearing failure

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Machine Design
When a belt drive is transmitting maximum power,

Effective tension is half of centrifugal tension
Effective tension is equal to centrifugal tension
Driving tension on slack side is equal to centrifugal tension
Driving tension on tight side is twice the centrifugal tension

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