Determine (a) the output power. and (b) the efficiency of a three-phase, 400 V induction motor running on load with a fractional slip of 0.04 and taking a current of 50 A at a power- factor of 0.86. When running light, without any load, at 400 V, the motor has an input current of 15 A and the power taken is 2000 W, of which 650 W represents the friction-and-windage loss. The resistance between any two terminals of the delta-connected winding is 0.333 N. Do not ignore the stator impedance and assume that when the motor is running light, the rotor current is negligible.

Determine (a) the output power. and (b) the efficiency of a three-phase, 400 V induction motor running on load with a fractional slip of 0.04 and taking a current of 50 A at a power- factor of 0.86. When running light, without any load, at 400 V, the motor has an input current of 15 A and the power taken is 2000 W, of which 650 W represents the friction-and-windage loss. The resistance between any two terminals of the delta-connected winding is 0.333 N. Do not ignore the stator impedance and assume that when the motor is running light, the rotor current is negligible.

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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