17. The input power to a 6-pole, 3-phase, 50 Hz induction motor is 42 KW; the speed is 970 rpm. The stator losses are 1.2 KW and the friction and windage loss 1.8 KW. Find (i) the Cu loss and (ii) the efficiency of the motor.

17. The input power to a 6-pole, 3-phase, 50 Hz induction motor is 42 KW; the speed is 970 rpm. The stator losses are 1.2 KW and the friction and windage loss 1.8 KW. Find (i) the Cu loss and (ii) the efficiency of the motor.

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 13RQ: A squirrel-cage induction motor is operating at 1175 RPM and producing a torque of 22 Ib-ft. What is...

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Concept explainers

Three Phase Induction Motor

The induction motor is an electric motor that runs on AC (alternating current) and it is of two type single phase motor that work on single-phase power supply and three-phase motor that work on three-phase power supply.

Question

17. The input power to a 6-pole, 3-phase, 50 Hz induction motor is 42 KW; the speed is 970 rpm. The
stator losses are 1.2 KW and the friction and windage loss 1.8 KW. Find (i) the Cu loss and (ii) the
efficiency of the motor.

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