A three-phase, 460V, 1740 rpm, 60HZ, 4 pole wound rotor has the following parameters per phase: RI 0.25 The rotational losses are 1700 Watts. With the rotor terminal short-circuited, find (a) R2 0.19 XI X2 0.5, and Xm 30 (i) Starting current when started directly with full voltage (ii) Starting torque.

A three-phase, 460V, 1740 rpm, 60HZ, 4 pole wound rotor has the following parameters per phase: RI 0.25 The rotational losses are 1700 Watts. With the rotor terminal short-circuited, find (a) R2 0.19 XI X2 0.5, and Xm 30 (i) Starting current when started directly with full voltage (ii) Starting torque.

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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