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Answer :

A centrifugal switch is used to disconnect starting winding when motor has picked up about 50 to 70 per cent of rated speed.

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Last Answer : Centrifugal switch disconnects the auxiliary winding of the motor at about 70 to 80 percent of synchronous speed.

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Last Answer : If the centrifugal switch does not open at 70 to 80 percent of synchronous speed of motor, it would result in damage to the starting winding.