Question 3.A 3-phase, 22 Hp, 460 V (line-to-line rms), 60 Hz, 1160 rpm induction motorhas a starting current of 150 A. The ratio of the starting current and the full load supply current.(per-phase) is 5. The input power factor (PF) is 0.8 lagging at the rated condition. The rotationallosses are 1500 W.(a) Determine the number of poles of the machine.(b) Determine the rated input power at the full load condition.(c) Determine the efficiency.

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Answered: Question 3. A 3-phase, 22 Hp, 460 V…

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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