Centrifugal switch disconnects the auxiliary winding of the motor at about ______ percent of synchronous speed?
Correct answer: B. 70 to 80
- A. 30 to 40
- B. 70 to 80
- C. 80 to 90
- D. 100
Explanation
The centrifugal switch normally opens when the motor reaches approximately 70 to 80 percent of synchronous speed, removing the auxiliary winding from the circuit. It need not wait until synchronous speed because induction motors always operate slightly below it.
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