A 4-pole, 75 kW, 3-phase, Y connected load, 50Hz 440 V synchronous motor operates at rated condition with 0.8 pf leading. The motor efficiency excluding field and stator losses is 95% and Xs = 2.5 ohms what is the machinal power developed? a. 15250 W b. 92000 W c. 78950 W d. 52446 W
A 4-pole, 75 kW, 3-phase, Y connected load, 50Hz 440 V synchronous motor operates at rated condition with 0.8 pf leading. The motor efficiency excluding field and stator losses is 95% and Xs = 2.5 ohms what is the machinal power developed? a. 15250 W b. 92000 W c. 78950 W d. 52446 W
Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)
10th Edition
ISBN:9781337399128
Author:Russell E. Smith
Publisher:Russell E. Smith
Chapter9: Components For Electric Motors
Section: Chapter Questions
Problem 8RQ
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A 4-pole, 75 kW, 3-phase, Y connected load, 50Hz 440 V synchronous motor operates at rated condition with 0.8 pf leading. The motor efficiency excluding field and stator losses is 95% and Xs = 2.5 ohms what is the machinal power developed?
a. 15250 W
b. 92000 W
c. 78950 W
d. 52446 W
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What is the power factor angle?
a. -12 degrees
b. 45 degrees
c. -30 degrees
d. -18 degrees
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