In a 2-pole, 208 V (L-L, rms), 60-Hz motor, Rs = 0.5 Ω, Rr = 0 45 Ω, Xℓs = 0.6 Ω, and Xℓr = 0 83 Ω. The magnetizing reactance Xm = 28.5 Ω. This motor is supplied by its rated voltages. The rated torque is developed at the slip s = 0.03. At the rated torque, calculate the rotor power loss, the input current, and the input power factor of operation.

In a 2-pole, 208 V (L-L, rms), 60-Hz motor, Rs = 0.5 Ω, Rr = 0 45 Ω, Xℓs = 0.6 Ω, and Xℓr = 0 83 Ω. The magnetizing reactance Xm = 28.5 Ω. This motor is supplied by its rated voltages. The rated torque is developed at the slip s = 0.03. At the rated torque, calculate the rotor power loss, the input current, and the input power factor of operation.

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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