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4.3 The power supplied to a three phase induction motor is 32 kw and the stator losses are 1200 W. If the slip is 5 %, determine the following: (d) The % efficiency of the motor. If the speed of the motor is reduced to 35% of its synchronous speed by using external rotor resistance, determine the following: (e) The rotor copper loss in W. (f) The % efficiency of the motor.

4.3 The power supplied to a three phase induction motor is 32 kw and the stator losses are 1200 W. If the slip is 5 %, determine the following: (d) The % efficiency of the motor. If the speed of the motor is reduced to 35% of its synchronous speed by using external rotor resistance, determine the following: (e) The rotor copper loss in W. (f) The % efficiency of the motor.

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
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Electrical Machines 4.3b please round off to 2 decimal places

4.3 The power supplied to a three phase induction motor is 32 kw and the stator losses are 1200 W. If the slip is 5 %, determine the following: (d) The % efficiency of the motor. If the speed of the motor is reduced to 35% of its synchronous speed by using external rotor resistance, determine the following: (e) The rotor copper loss in W. (f) The % efficiency of the motor.
Transcribed Image Text:4.3 The power supplied to a three phase induction motor is 32 kw and the stator losses are 1200 W. If the slip is 5 %, determine the following: (d) The % efficiency of the motor. If the speed of the motor is reduced to 35% of its synchronous speed by using external rotor resistance, determine the following: (e) The rotor copper loss in W. (f) The % efficiency of the motor.
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