The full-load slip of 4-pole,60Hz,440v
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
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The full-load slip of 4-pole,60Hz,440v (line -to-line) three phase induction motor is 0.05.
i.What is the speed of the rotating stator field?What is the frequencey (in Hz) of the rotor current.
ii.When the output power of the motor is 90 hp at a speed of 1732rpm,rotational losses(which includes frictional and core losses) are 10,100W,while copper losses for both rotor and stator total 3700W.Determine the motor efficiency and line current,assuming the motor has a 0.8 pf lagging under these conditions.
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