Q:A. A 6-pole, 50 Hz, 3-phase induction motor runs at 960 r.p.m. when the torque on theshaft is 200 N-m. If the stator losses are 1500 W and friction and windage losses are500 W. find (1) rotor Cu loss and (2) efficiency of the motor.

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Answered: 3-Phase induction motor If the stator…

Engineering

Electrical Engineering

3-Phase induction motor If the stator losses are 15-

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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Concept explainers

Single Phase Induction Motor

The single-phase induction motor or engine consists of a single rotating phase in the stator and a rotating cage in the rotor. When phase one supply is connected to the stator winding, a magnetic field is generated. In the pulsating field, the rotor does not rotate due to inertia. So, a single-phase import motor does not start and requires some initial methods.

Question

Q:A. A 6-pole, 50 Hz, 3-phase induction motor runs at 960 r.p.m. when the torque on the
shaft is 200 N-m. If the stator losses are 1500 W and friction and windage losses are
500 W. find (1) rotor Cu loss and (2) efficiency of the motor.

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