A three-phase synchronous motor rated at 1.2 MW with a power factor of 0.87 leading and an efficiency of 90% is connected to an 11 kV supply. The synchronous reactance of the motor is 1.5 Q2/phase. Calculate the per-unit reactance of the motor to its own base.
A three-phase synchronous motor rated at 1.2 MW with a power factor of 0.87 leading and an efficiency of 90% is connected to an 11 kV supply. The synchronous reactance of the motor is 1.5 Q2/phase. Calculate the per-unit reactance of the motor to its own base.
Chapter39: Synchronous Motor Operation
Section: Chapter Questions
Problem 14SQ: Induction motors and welding transformers require magnetizing current, which causes a. lagging power...
Question
2023 A c)
![A three-phase synchronous motor rated at 1.2 MW with a power factor
of 0.87 leading and an efficiency of 90% is connected to an 11 kV
supply. The synchronous reactance of the motor is 1.5 Q2/phase.
Calculate the per-unit reactance of the motor to its own base.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F30ec4eed-bdd5-48d9-8aac-b321c326b42b%2Faa4d8b3a-5bd0-4833-922a-9a5513ebcb6e%2Frxrocw_processed.png&w=3840&q=75)
Transcribed Image Text:A three-phase synchronous motor rated at 1.2 MW with a power factor
of 0.87 leading and an efficiency of 90% is connected to an 11 kV
supply. The synchronous reactance of the motor is 1.5 Q2/phase.
Calculate the per-unit reactance of the motor to its own base.
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