A 24 poles, 50Hz, three phase induction motor develops a full load torque at 245 rpm. The rotor has a resistance of 0.02 2 and 0.27 Q of standstill reactanice per phase. Calculate :1- the ratio of maximum torque to full load torque? 2- the ratio of starting torque to full load torque? 3-speed at maximum torque?

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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A 24 poles, 50Hz, three phase induction motor develops a full load torque at
245 rpm. The rotor has a resistance of 0.02 2 and 0.27 Q of standstill reactanice
per phase. Calculate :1- the ratio of maximum torque to full load torque?
2- the ratio of starting torque to full load torque?
3-speed at maximum torque?
Transcribed Image Text:A 24 poles, 50Hz, three phase induction motor develops a full load torque at 245 rpm. The rotor has a resistance of 0.02 2 and 0.27 Q of standstill reactanice per phase. Calculate :1- the ratio of maximum torque to full load torque? 2- the ratio of starting torque to full load torque? 3-speed at maximum torque?
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