The resistance and standstill reactance of each phase of a 3-phase induction motor with star- connected rotor are 0.062 and 0.42 respectively. The full-load slip is 4% . Calculate the resistance per phase of a star-connected rheostat which, when connected to the rotor circuit will give a pull- out torque at one half of the full load speed. What is then the power factor? Ans[0.1482 , 0.707Lag]

The resistance and standstill reactance of each phase of a 3-phase induction motor with star- connected rotor are 0.062 and 0.42 respectively. The full-load slip is 4% . Calculate the resistance per phase of a star-connected rheostat which, when connected to the rotor circuit will give a pull- out torque at one half of the full load speed. What is then the power factor? Ans[0.1482 , 0.707Lag]

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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