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Q1) A 460-V, 25-hp, 60-Hz, four-pole, Y-connected induction motor has the following impedances ohms per phase referred to the stator circuit: R1 = 0.641 Q, X1 1.106 2, R2' = 0.332 2, X2' 0.464 2, Xo = 26..3 Q The total rotational losses are 1100 Wand are assumed to be constant. The core loss is Jumped in with rotational losses. For a rotor slip of 2.2 percent at the rated voltage and rated frequency, find the motor's

Q1) A 460-V, 25-hp, 60-Hz, four-pole, Y-connected induction motor has the following impedances ohms per phase referred to the stator circuit: R1 = 0.641 Q, X1 1.106 2, R2' = 0.332 2, X2' 0.464 2, Xo = 26..3 Q The total rotational losses are 1100 Wand are assumed to be constant. The core loss is Jumped in with rotational losses. For a rotor slip of 2.2 percent at the rated voltage and rated frequency, find the motor's

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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Q1) 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: R1 = 0.641 N, X1 = 1.106 N, R2' = 0.332 2, X2' 0.464 2, Xo = 26..3 Q The total rotational losses are 1100 Wand are assumed to be constant. The core loss is Jumped in with the rotational losses. For a rotor slip of 2.2 percent at the rated voltage and rated frequency, find the motor's 1) Input current & Efficiency 2) Sketch the complete torque-speed characteristic of an induction machine and indicate the three modes of operation.
Transcribed Image Text:Q1) 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: R1 = 0.641 N, X1 = 1.106 N, R2' = 0.332 2, X2' 0.464 2, Xo = 26..3 Q The total rotational losses are 1100 Wand are assumed to be constant. The core loss is Jumped in with the rotational losses. For a rotor slip of 2.2 percent at the rated voltage and rated frequency, find the motor's 1) Input current & Efficiency 2) Sketch the complete torque-speed characteristic of an induction machine and indicate the three modes of operation.
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