4-pole Q-1. A 440 V, 50 Hz, 37.3 Kw, 3-phase, star-connected induction motor has per phase stator impedance Z₁= (0.1+ j0.4)2 and per phase rotor impedance referred to stator 2₂- (0.15+ j0.44). The motor has stator core loss of 1250 W and rotational loss of 1000W. It draws a no load line current of 20 A at p.f. 0.09 lagging with slip 3%. Using approximate equivalent circuit, calculate: (1) stator current and stator power factor (2) power output and efficiency (3) torque developed.

4-pole Q-1. A 440 V, 50 Hz, 37.3 Kw, 3-phase, star-connected induction motor has per phase stator impedance Z₁= (0.1+ j0.4)2 and per phase rotor impedance referred to stator 2₂- (0.15+ j0.44). The motor has stator core loss of 1250 W and rotational loss of 1000W. It draws a no load line current of 20 A at p.f. 0.09 lagging with slip 3%. Using approximate equivalent circuit, calculate: (1) stator current and stator power factor (2) power output and efficiency (3) torque developed.

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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