List several methods for starting synchronous motors. Check all that apply. Start the motor as an induction motor relying on the amortisseur conductors to produce torque. Use a prime mover to bring the motor up to synchronous speed before connecting the source. Synchronous motors can start without being driven, or having their rotor connected in the form of a self-starting circuit. Use an electronic system to convert 60-Hz power into three-phase ac of variable frequency. Start with a frequency of one hertz or less and then gradually increase the frequency.

List several methods for starting synchronous motors. Check all that apply. Start the motor as an induction motor relying on the amortisseur conductors to produce torque. Use a prime mover to bring the motor up to synchronous speed before connecting the source. Synchronous motors can start without being driven, or having their rotor connected in the form of a self-starting circuit. Use an electronic system to convert 60-Hz power into three-phase ac of variable frequency. Start with a frequency of one hertz or less and then gradually increase the frequency.

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter32: Three-phase Motors

Section: Chapter Questions

Problem 6RQ: Name three factors that determine the torque produced by an induction motor.

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