Machine Design
When the speed of belt increases,

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

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Machine Design
When the shaft rotates in anticlockwise direction at high speed in a bearing, it will

Move towards left of the bearing making metal to metal contact
Move towards right of the bearing making metal to metal contact
Move towards right of the bearing making no metal to metal contact
Have contact at the bottom most of the bearing

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