The shaft power of a shunt motor is 7.8Hp. It draws 30A from a 200V source. The field windings draws 1.2A. What is the efficiency of the motor (in %)?

Delmar's Standard Textbook Of Electricity
7th Edition
ISBN:9781337900348
Author:Stephen L. Herman
Publisher:Stephen L. Herman
Chapter32: Three-phase Motors
Section: Chapter Questions
Problem 2PA: You have been given the task of connecting a nine-lead three-phase dual-voltage motor to a 240-V...
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The shaft power of a shunt motor is 7.8Hp. It draws 30A from a 200V source. The field windings draws 1.2A. What is the efficiency of the motor (in %)?

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