Answered: A 208-V, 50-Hz, 12-pole, Y-connected,…

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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A 208-V, 50-Hz, 12-pole, Y-connected, three-phase induction motor has a stator impedance of 0.1 + j0.3 W phase and a rotor impedance of 0.06 + j0.8 R/phase at standstill. The core-loss resistance is 150 R/phase, and the magnetization reactance is 750 W phase. The friction and windage loss is 2 kW. When the motor operates at its full-load slip of 5%, determine (a) the power input, (b) the stator copper loss, (c) the rotor copper loss, (d) the air-gap power, (e) the power developed, (f) the power output, (g) the effi- ciency, (h) the shaft torque, and (i) the horsepower rating of the motor.

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