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A permanent split capacitor motor has

  • A.two capacitors switched in sequence during the start
  • B.no auxiliary winding of any kind on the stator
  • C.a centrifugal switch that opens at about three quarters of synchronous speed
  • D.one capacitor permanently in circuit with the auxiliary winding

Answer: D

With nothing to switch, it is simple and quiet and runs with a nearly circular field, but its starting torque is low because the capacitor is sized for running. Fans and blowers, which need little to start with, are its market.

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