A 25 hp, 460 V, 60 Hz, 4 poles, Y connected three phase induction motor has the following per-phase impedances referred to the stator circuit: Rs = 0.641 Q RR = 0.332 Q Xs = 1.106 Q XR = 0.464 Q Xm = 26.3 Q The total rotational losses and core loss are lumped together, constant at (1100 + x00) W, where x is the last digit of your student ID number. For a rotor slip of 2.2 % at the rated voltage and rated frequency, i) Draw the equivalent circuit of the induction motor with proper label of all parameters. ii) Calculate the stator current, rotor current and magnetizing current of the induction motor iii) Calculate the power factor

A 25 hp, 460 V, 60 Hz, 4 poles, Y connected three phase induction motor has the following per-phase impedances referred to the stator circuit: Rs = 0.641 Q RR = 0.332 Q Xs = 1.106 Q XR = 0.464 Q Xm = 26.3 Q The total rotational losses and core loss are lumped together, constant at (1100 + x00) W, where x is the last digit of your student ID number. For a rotor slip of 2.2 % at the rated voltage and rated frequency, i) Draw the equivalent circuit of the induction motor with proper label of all parameters. ii) Calculate the stator current, rotor current and magnetizing current of the induction motor iii) Calculate the power factor

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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