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A three-phase induction motor with electrical phase equivalent circuit below is 4 poles and the label rotor speed is It is 1455 rpm. Wind-friction and iron losses are neglected. The motor is delta connected. a.) Calculate the development moment. b.) Calculate the overturning moment. c.) Calculate the value of the line current at the stator development moment (t = 0 s). d.) If Y / ∆ is started to this motor, what will be the value of the line current at the moment of development (t = 0 s).

A three-phase induction motor with electrical phase equivalent circuit below is 4 poles and the label rotor speed is It is 1455 rpm. Wind-friction and iron losses are neglected. The motor is delta connected. a.) Calculate the development moment. b.) Calculate the overturning moment. c.) Calculate the value of the line current at the stator development moment (t = 0 s). d.) If Y / ∆ is started to this motor, what will be the value of the line current at the moment of development (t = 0 s).

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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A three-phase induction motor with electrical phase equivalent circuit below is 4 poles and the label rotor speed is It is 1455 rpm. Wind-friction and iron losses are neglected. The motor is delta connected.
a.) Calculate the development moment.
b.) Calculate the overturning moment.
c.) Calculate the value of the line current at the stator development moment (t = 0 s). d.) If Y / ∆ is started to this motor, what will be the value of the line current at the moment of development (t = 0 s).

j0.50 0.252 j0.52 + V = 230V j202 - E R, = 0.152
Transcribed Image Text:j0.50 0.252 j0.52 + V = 230V j202 - E R, = 0.152
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