An 8 pole,40-hp,2300 v,50-Hz, 3 phase, induction motor is operating at 80% of rated load and 6% reduced voltage. The efficiency and power factors for these conditions are 85 and 90 percent respectively. The mechanical power losses, rotor conductor losses, and stator losses are 1011 W, 969 W, and 1559 W respectively. Sketch the power flow diagram and determine: i. Mechanical power developed ii. Shaft speed iii. Developed torque iv. Shaft torque v. Slip speed vi. Line current

An 8 pole,40-hp,2300 v,50-Hz, 3 phase, induction motor is operating at 80% of rated load and 6% reduced voltage. The efficiency and power factors for these conditions are 85 and 90 percent respectively. The mechanical power losses, rotor conductor losses, and stator losses are 1011 W, 969 W, and 1559 W respectively. Sketch the power flow diagram and determine: i. Mechanical power developed ii. Shaft speed iii. Developed torque iv. Shaft torque v. Slip speed vi. Line current

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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