(a) A 380 V, 1755 rev/min, three-phase induction motor delivers the output power of 15.2 kW. If the efficiency of motor is 80% and the rotor copper loss is 450 W at rated speed, evaluate (i) the slip, (ii) the airgap power of the motor, and (iii) the total core loss and stator copper loss. (b) What would be the result if a three phase induction motor runs at synchronous speed?

(a) A 380 V, 1755 rev/min, three-phase induction motor delivers the output power of 15.2 kW. If the efficiency of motor is 80% and the rotor copper loss is 450 W at rated speed, evaluate (i) the slip, (ii) the airgap power of the motor, and (iii) the total core loss and stator copper loss. (b) What would be the result if a three phase induction motor runs at synchronous speed?

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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A squirrel-cage induction motor is operating at 1175 RPM and producing a torque of 22 Ib-ft. What is the horsepower output of the motor?
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