A 400V (line-to-line), 50Hz, six-pole, 3-phase induction motor is taking 40kVA at 0.8 powerfactor. It is running at a slip of 2.5%. The stator copper losses are 0.4kW and rotational lossesare 2.5kW. Determine:a) The rotor copper losses.b) The shaft hp.c) The shaft torque.

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Answered: A 400V (line-to-line), 50Hz, six-pole,…

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 400V (line-to-line), 50Hz, six-pole, 3-phase induction motor is taking 40kVA at 0.8 power factor. It is running at a slip of 2.5%. The stator copper losses are 0.4kW and rotational losses are 2.5kW. Determine: a) The rotor copper losses. b) The shaft hp. c) The shaft torque.