3. A 75 KW, 60 Hz, 480V, 1176 pm, 3-© induction motor is operating under full load. Measurements indicate a power factor of 80 lagging and an efficiency of 0.90. Determine the following at rated operating conditions: a. The magnitude of the current drawn by the motor. b. The real, reactive, and complex power drawn by the motor. c. The output torque at full-load. d. The operating slip Hint: For part d, we don't know the number of poles! The only possible combinations are 2, 4, 6, and 8 poles. Find the closest Synchronous speed to the given rated speed to find the number of poles

3. A 75 KW, 60 Hz, 480V, 1176 pm, 3-© induction motor is operating under full load. Measurements indicate a power factor of 80 lagging and an efficiency of 0.90. Determine the following at rated operating conditions: a. The magnitude of the current drawn by the motor. b. The real, reactive, and complex power drawn by the motor. c. The output torque at full-load. d. The operating slip Hint: For part d, we don't know the number of poles! The only possible combinations are 2, 4, 6, and 8 poles. Find the closest Synchronous speed to the given rated speed to find the number of poles

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 6RQ: Name three factors that determine the torque produced by an induction motor.

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