A 480-V, 25-hp, 50-Hz, Six-pole, Y-connected induction motor has the following impedances in ohms per phase referred to the stator circuit: R₁ = 0.75 92, R₂ = 0.45 2, X₁-0.9 92, X₂=0.5 2, XM = 20 2. The total rotational losses are 950 W and are assumed to be constant. The core loss is 100 W. For a rotor slip of 4 percent at the rated voltage and rated frequency, find the motor's (a) Rotor mechanical Speed in (rad/sec). conv (b) Stator current. (d) Peony and Pout. (e) Tind and Tload. (f) Efficiency. (c) Power factor.

A 480-V, 25-hp, 50-Hz, Six-pole, Y-connected induction motor has the following impedances in ohms per phase referred to the stator circuit: R₁ = 0.75 92, R₂ = 0.45 2, X₁-0.9 92, X₂=0.5 2, XM = 20 2. The total rotational losses are 950 W and are assumed to be constant. The core loss is 100 W. For a rotor slip of 4 percent at the rated voltage and rated frequency, find the motor's (a) Rotor mechanical Speed in (rad/sec). conv (b) Stator current. (d) Peony and Pout. (e) Tind and Tload. (f) Efficiency. (c) 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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