Determine the operating power factor of a 6.6kV Y-connected synchronous motor has a synchronous reactance per phase of 10 ohms and a negligible resistance. For a certain load, the motor draws 990,000 watts at normal voltage. At this load, the induced emf per phase is 5.16kV. 0.502 O 0.478 0.462 0.518

Electric Motor Control
10th Edition
ISBN:9781133702818
Author:Herman
Publisher:Herman
Chapter39: Synchronous Motor Operation
Section: Chapter Questions
Problem 14SQ: Induction motors and welding transformers require magnetizing current, which causes a. lagging power...
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Determine the operating power factor of a 6.6kV Y-connected synchronous motor has a
synchronous reactance per phase of 10 ohms and a negligible resistance. For a certain load,
the motor draws 990,000 watts at normal voltage. At this load, the induced emf per phase is
5.16kV.
口 0.502
口 0.478
口 0.462
0.518
Transcribed Image Text:Determine the operating power factor of a 6.6kV Y-connected synchronous motor has a synchronous reactance per phase of 10 ohms and a negligible resistance. For a certain load, the motor draws 990,000 watts at normal voltage. At this load, the induced emf per phase is 5.16kV. 口 0.502 口 0.478 口 0.462 0.518
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