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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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1. A 3-phase, 60 Hz, 4-pole, 460 V, 25A asynchronous motor has 0.85 reverse power coefficient. The
stator copper losses of this machine are 1000 w and the rotor copper losses are 500 w. Friction and
wind losses were measured as 250 w, core losses as 800 W, and stray load losses as 200 w.
According to these given
wwwh ww
a) Air gap strength,
b) Produced mechanical power.
c) sign,
d) Slip,
e) Working speed (r/ min)
f) Generated torgue,
g) Calculate the output torgue.
Transcribed Image Text:1. A 3-phase, 60 Hz, 4-pole, 460 V, 25A asynchronous motor has 0.85 reverse power coefficient. The stator copper losses of this machine are 1000 w and the rotor copper losses are 500 w. Friction and wind losses were measured as 250 w, core losses as 800 W, and stray load losses as 200 w. According to these given wwwh ww a) Air gap strength, b) Produced mechanical power. c) sign, d) Slip, e) Working speed (r/ min) f) Generated torgue, g) Calculate the output torgue.
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