100 hp, 440 volts three-phase, 60 hz induction motor operates with 92% efficiency, 0.85 power factor at rated load. What is the current of the motor? a. 125 A c. 115 A b. 98 A d. 55 A The synchronous motor is not inherently self- starting because a. the rotating magnetic field does not have enough poles b. the rotating magnetic field is produced by only 50 HZ frequency currents c. the force required to accelerate the rotor is to the synchronous speed in an instant is d.

100 hp, 440 volts three-phase, 60 hz induction motor operates with 92% efficiency, 0.85 power factor at rated load. What is the current of the motor? a. 125 A c. 115 A b. 98 A d. 55 A The synchronous motor is not inherently self- starting because a. the rotating magnetic field does not have enough poles b. the rotating magnetic field is produced by only 50 HZ frequency currents c. the force required to accelerate the rotor is to the synchronous speed in an instant is d.

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 13RQ: A squirrel-cage induction motor is operating at 1175 RPM and producing a torque of 22 Ib-ft. What is...

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