Machine Design
When the speed of belt increases,

The coefficient of friction between the belt and pulley decreases
The coefficient of friction between the belt and pulley increases
The power transmitted will decrease
The power transmitted will increase

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Machine Design
Plastic flow in ductile materials

Increases the seriousness of static loading stress concentration
Has no effect on it
Depends on other considerations
Lessens the seriousness of static loading stress concentration

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