3. A4-pole, 50-Hz induction motor has a full-load slip of 5%. Each rotor phase has a resistance of O.3 Q and a standstill reactance of 1.2 2. Find the ratio of maximum torque to full-load torque and the speed at which maximum torque occurs. [2.6 ; 1125 r.p.m.]

3. A4-pole, 50-Hz induction motor has a full-load slip of 5%. Each rotor phase has a resistance of O.3 Q and a standstill reactance of 1.2 2. Find the ratio of maximum torque to full-load torque and the speed at which maximum torque occurs. [2.6 ; 1125 r.p.m.]

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 13RQ: A squirrel-cage induction motor is operating at 1175 RPM and producing a torque of 22 Ib-ft. What is...

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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

3. A4-pole, 50-Hz induction motor has a full-load slip of 5%. Each rotor phase has a resistance of O.3 Q
and a standstill reactance of 1.2 2. Find the ratio of maximum torque to full-load torque and the speed
at which maximum torque occurs.
[2.6 ; 1125 r.p.m.]

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