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A three-phase, two-pole induction motor, connected at A of 5HP, 220V, 60HZ, has rotational losses of 250W, when operating with a slip of 2.5%. it is known that the motor has the following parameters per phase: r1=r2'=0.250, x1=x'2=1.2jÒ , rc=900, xp=15jQ. Consider 1HP=746W. Under these conditions, calculate:

A three-phase, two-pole induction motor, connected at A of 5HP, 220V, 60HZ, has rotational losses of 250W, when operating with a slip of 2.5%. it is known that the motor has the following parameters per phase: r1=r2'=0.250, x1=x'2=1.2jÒ , rc=900, xp=15jQ. Consider 1HP=746W. Under these conditions, calculate:

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
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A three-phase, two-pole induction motor, connected at A of 5HP, 220V, 60HZ, has rotational losses of 250W, when operating with a slip of 2.5%. it is known that the motor has the following parameters per phase: r1=r2'=0.250, x1=x'2=1.2j0 , rc=90Q, xp=15jQ. Consider 1HP=746W. Under these conditions, calculate: (a) The current in the rotor per phase, referred to the stator. (b) The output power value on the motor shaft. (c) Engine efficiency. (d) The torque supplied on the motor shaft. (e) The motor starting line current (consider the motor initially stopped).
Transcribed Image Text:A three-phase, two-pole induction motor, connected at A of 5HP, 220V, 60HZ, has rotational losses of 250W, when operating with a slip of 2.5%. it is known that the motor has the following parameters per phase: r1=r2'=0.250, x1=x'2=1.2j0 , rc=90Q, xp=15jQ. Consider 1HP=746W. Under these conditions, calculate: (a) The current in the rotor per phase, referred to the stator. (b) The output power value on the motor shaft. (c) Engine efficiency. (d) The torque supplied on the motor shaft. (e) The motor starting line current (consider the motor initially stopped).
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