Answered: 3) The conversion ratio of an…

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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3) The conversion ratio of an asynchronous motor with 415 V, 3-phase, 60Hz, 6-pole, Y-connected rotor winding is a = N1 / N2 = 1.5,
Parameter values per phase transferred to the stator are given below.

a) For the case where slip s = 0.05, calculate the stator current, the torque generated in the motor, with the rotor circuit voltage
Calculate the frequency.
b) Subtract the Thevenin equivalent.
c) The rotor stays stuck while the motor is running under load. Find the rotor current reflected to the stator at this instant.
d) Find the maximum torque the motor can produce.
e) It is required that the engine initially develops with maximum torque. For this, external
Find the value of the resistance transferred to the stator

Rs= 0.04 2
Xsl=0.15 2
Xm=9.85 2
R=0.05 2
X=0.15 2

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