Q2. (a) Discuss briefly the use of a damping winding to start a three- phase synchronous motor. (i) A 2200V. 3-phase star connected synchronous motor has a per phase resistance and per phase reactance of 0.20 and 2.10 respectively. Determine the value of the back emf per phase if the motor operates at a 50% power factor and at a line current of 198A

Q2. (a) Discuss briefly the use of a damping winding to start a three- phase synchronous motor. (i) A 2200V. 3-phase star connected synchronous motor has a per phase resistance and per phase reactance of 0.20 and 2.10 respectively. Determine the value of the back emf per phase if the motor operates at a 50% power factor and at a line current of 198A

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter35: Harmonics 916

Section: Chapter Questions

Problem 3RQ: Would a positive-rotating harmonic or a negative-rotating harmonic be more harmful to an induction...

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