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A 460-V. 25-hp. 60 Hz. four-pole. Y-connected induction motor has the following impedances in ohms per phase referred to the stator circuit: RI = 0.641 ohm X1 = 1.106 ohm R2 = 0.332 ohm X2 = 0.464 ohm XM = 26.3 ohm (a) What is the maximum torque of this motor? (b) At what speed and slip does it occur? (c) What is the starting torque of this motor?

A 460-V. 25-hp. 60 Hz. four-pole. Y-connected induction motor has the following impedances in ohms per phase referred to the stator circuit: RI = 0.641 ohm X1 = 1.106 ohm R2 = 0.332 ohm X2 = 0.464 ohm XM = 26.3 ohm (a) What is the maximum torque of this motor? (b) At what speed and slip does it occur? (c) What is the starting torque of this motor?

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
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A 460-V. 25-hp. 60 Hz. four-pole. Y-connected induction motor has the following impedances in ohms per phase referred to the stator circuit: RI = 0.641 ohm X1 = 1.106 ohm R2 = 0.332 ohm X2 = 0.464 ohm XM= 26.3 ohm (a) What is the maximum torque of this motor? (b) At what speed and slip does it occur? (c) What is the starting torque of this motor? (d) When the rotor resistance is doubled. what is the speed at which the
Transcribed Image Text:A 460-V. 25-hp. 60 Hz. four-pole. Y-connected induction motor has the following impedances in ohms per phase referred to the stator circuit: RI = 0.641 ohm X1 = 1.106 ohm R2 = 0.332 ohm X2 = 0.464 ohm XM= 26.3 ohm (a) What is the maximum torque of this motor? (b) At what speed and slip does it occur? (c) What is the starting torque of this motor? (d) When the rotor resistance is doubled. what is the speed at which the
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