A 3-phase, 4 pole, 50 Hz squirrel cage induction motor has rotor leakage impedance of 1 + j2 /Ph, standstill voltage of 100 V per phase driving a constant torque ad at 0.03 slip, what is speed of the motor, if Supply voltage is increased by 25 % and frequency is constant.

A 3-phase, 4 pole, 50 Hz squirrel cage induction motor has rotor leakage impedance of 1 + j2 /Ph, standstill voltage of 100 V per phase driving a constant torque ad at 0.03 slip, what is speed of the motor, if Supply voltage is increased by 25 % and frequency is constant.

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

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

A 3-phase, 4 pole, 50 Hz squirrel cage induction motor has rotor leakage
impedance of 1+ j2 /Ph, standstill voltage of 100 V per phase driving a constant torque
oad at 0.03 slip, what is speed of the motor, if
Supply voltage is increased by 25 % and frequency is constant.

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