Machine Design
When the belt speed increases

Power transmitted decreases
Power transmitted increases
Power transmitted increases to a maximum value and then decreases
Power transmitted remains the same

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Machine Design
In replacing the V-belts, a complete set of new belts is used instead of replacing a single damaged belt because

The new belt will carry more than its share and result in short life
Belts are available in sets
Only one belt cannot be fitted with other used belts
New and old belts will cause vibrations

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