Answered: A three-phase induction motor with…

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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Question

A three-phase induction motor with electrical phase equivalent circuit below is 4 poles and the label rotor speed 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).

j0.52
0.252
j0.52
V, = 230V
j202
E
R, = 0.152

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