A 3 phase 220V 50Hz 4 pole induction motor has star connected stator winding. The per phase rotor resistance is 0.1Ω and per phase standstill reactance is 0.9Ω. The ratio of the stator and rotor turns is 1.75. Find the maximum torque and corresponding slip.

A 3 phase 220V 50Hz 4 pole induction motor has star connected stator winding. The per phase rotor resistance is 0.1Ω and per phase standstill reactance is 0.9Ω. The ratio of the stator and rotor turns is 1.75. Find the maximum torque and corresponding slip.

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 220V 50Hz 4 pole induction motor has star connected stator winding. The per phase

rotor resistance is 0.1Ω and per phase standstill reactance is 0.9Ω. The ratio of the stator and

rotor turns is 1.75. Find the maximum torque and corresponding slip.

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