14.A 3-phase, 400-V (Line to Line) wye-connected synchronous motor has synchronous reactance of 1 Ω/phase and a negligible armature resistance. The field current is so adjusted that the internal (Induced) voltage is 270 V/phase, while the motor draws 40 kW power from the source. Calculate the power factor of the motor.

14.A 3-phase, 400-V (Line to Line) wye-connected synchronous motor has synchronous reactance of 1 Ω/phase and a negligible armature resistance. The field current is so adjusted that the internal (Induced) voltage is 270 V/phase, while the motor draws 40 kW power from the source. Calculate the power factor of the motor.

Electric Motor Control

10th Edition

ISBN:9781133702818

Author:Herman

Publisher:Herman

Chapter54: Variable-frequency Mechanical Drives

Section: Chapter Questions

Problem 4SQ

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