A 3-phase, 20-pole induction motor is con-nected to a 600 V, 60 Hz source.a. What is the synchronous speed?b. If the voltage is reduced to 300 V, willthe synchronous speed change?c. How many groups are there, perphase?

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Answered: A 3-phase, 20-pole induction motor is…

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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A 3-phase, 20-pole induction motor is con- nected to a 600 V, 60 Hz source. a. What is the synchronous speed? b. If the voltage is reduced to 300 V, will the synchronous speed change? c. How many groups are there, per phase?