5- In a 3-phase induction motor, if the supply voltage and frequency afe reduced by the ratio, then slip at which maximum torque occurs is.... a) More and maximum torque remains constant. b) More and maximum torque decreases.

5- In a 3-phase induction motor, if the supply voltage and frequency afe reduced by the ratio, then slip at which maximum torque occurs is.... a) More and maximum torque remains constant. b) More and maximum torque decreases.

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

5- In a 3-phase induction motor, if the supply voltage and frequency afe reduced by the same
ratio, then slip at which maximum torque occurs is....
a) More and maximum torque remains constant.
b) More and maximum torque decreases.
c) Less and maximum torque decreases.

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