A 440 V , 25 hp , 4 - pole , Y - connected three - phase wound - rotor induction motor has the following circuit parameters : R1 = 0.460 , R2 = 0.33 0 , x1 = 1.1 0 , x2 = 0.46 02 , and Xm = 25 22. ( stator referred ) Rotational losses ( including core loss ) = 500 W ( constant ) . If the terminal voltage and supply frequency are simultaneously reduced to 50 % , calculate the stator current , the developed air - gap torque , and the maximum torque at a slip of 0.04 .
A 440 V , 25 hp , 4 - pole , Y - connected three - phase wound - rotor induction motor has the following circuit parameters : R1 = 0.460 , R2 = 0.33 0 , x1 = 1.1 0 , x2 = 0.46 02 , and Xm = 25 22. ( stator referred ) Rotational losses ( including core loss ) = 500 W ( constant ) . If the terminal voltage and supply frequency are simultaneously reduced to 50 % , calculate the stator current , the developed air - gap torque , and the maximum torque at a slip of 0.04 .
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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A 440 V , 25 hp , 4 - pole , Y - connected three - phase wound - rotor induction motor has the following circuit parameters : R1 = 0.460 , R2 = 0.33 0 , x1 = 1.1 0 , x2 = 0.46 02 , and Xm = 25 22. ( stator referred ) Rotational losses ( including core loss ) = 500 W ( constant ) . If the terminal voltage and supply frequency are simultaneously reduced to 50 % , calculate the stator current , the developed air - gap torque , and the maximum torque at a slip of 0.04 .
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