A 4-pole, 50-Hz induction motor has a full-load slip of 5%. Each rotor phase has aresistance of 0.3 2 and standstill reactance is 1.2 N. Find the ratio of maximumtorque to full-load torque and the speed at which maximum torque occurs.

In this question we will find ratio of maximum torque to full load torque and speed at which maximum…

A 4-pole, 50-Hz induction motor has a full-load slip of 5%. Each rotor p resistance of 0.3 2 and standstill reactance is 1.2 Q. Find the ratio of torque to full-load torque and the speed at which maximum torque occur

A 4-pole, 50-Hz induction motor has a full-load slip of 5%. Each rotor p resistance of 0.3 2 and standstill reactance is 1.2 Q. Find the ratio of torque to full-load torque and the speed at which maximum torque occur

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

Speed control of motor

Speed control by DC motor-speed controller is required to realize variable speed drive. Whenever a motor drives a particular load, it is called drive, and variable speed drive refers to a load requiring variable speed. All this is obtained by a DC motor speed controller.

Question

A 4-pole, 50-Hz induction motor has a full-load slip of 5%. Each rotor phase has a
resistance of 0.3 2 and standstill reactance is 1.2 N. Find the ratio of maximum
torque to full-load torque and the speed at which maximum torque occurs.

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