0-4:-A three phase induction motor has 4-pole runs at 1440 rpm on 500 V, s0 Hz. The mechanical power developed by the rotor is 20.3 hp. The mechanical losses are 2.23 hp. Determine (a) the slip (b) the rotor copper losses, and (c) the efficiency.

0-4:-A three phase induction motor has 4-pole runs at 1440 rpm on 500 V, s0 Hz. The mechanical power developed by the rotor is 20.3 hp. The mechanical losses are 2.23 hp. Determine (a) the slip (b) the rotor copper losses, and (c) the efficiency.

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

0-4:-A three phase induction motor has 4-pole runs at 1440 rpm on 500 V, s0 Hz. The
mechanical power developed by the rotor is 20.3 hp. The mechanical losses are 2.23 hp.
Determine (a) the slip (b) the rotor copper losses, and (c) the efficiency.

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