A compound motor develops a torque of 271 lb-ft when it is operating at 1200 rpm, under which condition its armature current Ia is 215 amperes. What will be the developed horsepower of the motor if the load is increased so that it slows down to 1,1120 rpm in which case Ia changes to 238 amperes and the total flux increases by 8 percent?

A compound motor develops a torque of 271 lb-ft when it is operating at 1200 rpm, under which condition its armature current Ia is 215 amperes. What will be the developed horsepower of the motor if the load is increased so that it slows down to 1,1120 rpm in which case Ia changes to 238 amperes and the total flux increases by 8 percent?

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter30: Dc Motors

Section: Chapter Questions

Problem 19RQ: A motor is operating a load that requires a torque of 750 lb-in. and is turning at a speed of 1575...

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