A three phase, 50 Hz, 4 pole slip ring induction motor runs at 1455 rpm on full load. The rotor resistance per phase on stand still is 0.2 ohm. It is required to reduce the speed by 10% by inserting the series resistance in the rotor circuit. Determine the rotor resistance per phase required. (Ans: 0.6467 ohm)

A three phase, 50 Hz, 4 pole slip ring induction motor runs at 1455 rpm on full load. The rotor resistance per phase on stand still is 0.2 ohm. It is required to reduce the speed by 10% by inserting the series resistance in the rotor circuit. Determine the rotor resistance per phase required. (Ans: 0.6467 ohm)

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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