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pole, 3-pha is 40 kW. and winda the motor

pole, 3-pha is 40 kW. and winda the motor

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
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c3.17 The power input to a 415 V, 50 Hz, 6-pole, 3-phase induction motor running at 975 rpm is 40 kW. The stator losses are 1 kW and friction and windage losses total 2 kW. The efficiency of the motor is (a) 92.5% (b) 90% (c) 91% (d) 88%
Transcribed Image Text:c3.17 The power input to a 415 V, 50 Hz, 6-pole, 3-phase induction motor running at 975 rpm is 40 kW. The stator losses are 1 kW and friction and windage losses total 2 kW. The efficiency of the motor is (a) 92.5% (b) 90% (c) 91% (d) 88%
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