A three phase 220-V, 60 HZ, four-pole, Y-connected induction motor operating at 3% slip, has the following per phase parameters: R1 = 0.20 Ω , X1 = 0.50 Ω , R2 = 0.15 Ω , X2 = 0.30 Ω . The core effects are negligible. The total rotational and other losses are 1000 W. Determine the following: Draw the equivalent circuit of the above induction motor Stator current Power factor Input power Stator copper losses Air gap power Rotor copper losses Electromagnetic torque Power input Efficiency of the motor

A three phase 220-V, 60 HZ, four-pole, Y-connected induction motor operating at 3% slip, has the following per phase parameters: R1 = 0.20 Ω , X1 = 0.50 Ω , R2 = 0.15 Ω , X2 = 0.30 Ω . The core effects are negligible. The total rotational and other losses are 1000 W. Determine the following: Draw the equivalent circuit of the above induction motor Stator current Power factor Input power Stator copper losses Air gap power Rotor copper losses Electromagnetic torque Power input Efficiency of the motor

Electric Motor Control

10th Edition

ISBN:9781133702818

Author:Herman

Publisher:Herman

Chapter39: Synchronous Motor Operation

Section: Chapter Questions

Problem 14SQ: Induction motors and welding transformers require magnetizing current, which causes a. lagging power...

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Induction motors and welding transformers require magnetizing current, which causes a. lagging power factor. b. leading power factor. c. unity power factor. d. zero power factor.
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