Machine Design
A fast and loose pulley drive is used when

Shafts are arranged parallel and rotate in the opposite directions
Shafts are arranged at right angles and rotate in one definite direction
Driven shaft is to be started or stopped whenever desired without interfering with the driving shaft
Shafts are arranged parallel and rotate in the same directions

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Machine Design
Cold working

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

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