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A 460V, 25 hp [1 hp = 746 watts], 60 Hz, four-pole, Y-connected induction motor has the following impedances in ohms per phase referred to the stator circuit: R₁ = 0.6412, R₂=0.33202, X₁ = 1.106 2, X2=0.464 Q2, XM = 26.3 2. The total rotational losses are 1100 W and are assumed to be constant. The core loss is lumped in with the rotational losses. For a rotor slip of 2.2 percent at the rated voltage and rated frequency, calculate the: (a) motor speed. (b) stator current. (c) power factor. (d) converted power PCON. (e) power output POUT. (f) induced torque and the load torque. (g) motor efficiency.

A 460V, 25 hp [1 hp = 746 watts], 60 Hz, four-pole, Y-connected induction motor has the following impedances in ohms per phase referred to the stator circuit: R₁ = 0.6412, R₂=0.33202, X₁ = 1.106 2, X2=0.464 Q2, XM = 26.3 2. The total rotational losses are 1100 W and are assumed to be constant. The core loss is lumped in with the rotational losses. For a rotor slip of 2.2 percent at the rated voltage and rated frequency, calculate the: (a) motor speed. (b) stator current. (c) power factor. (d) converted power PCON. (e) power output POUT. (f) induced torque and the load torque. (g) motor efficiency.

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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A 460V, 25 hp [1 hp = 746 watts], 60 Hz, four-pole, Y-connected induction motor has the following impedances in ohms per phase referred to the stator circuit: R₁ = 0.6412, R₂ = 0.33202, X₁ = 1.106 92, X2=0.464 92, XM = 26.3 2. The total rotational losses are 1100 W and are assumed to be constant. The core loss is lumped in with the rotational losses. For a rotor slip of 2.2 percent at the rated voltage and rated frequency, calculate the: (a) motor speed. (b) stator current. (c) power factor. (d) converted power PCON. (e) power output POUT. (f) induced torque and the load torque. (g) motor efficiency.
Transcribed Image Text:A 460V, 25 hp [1 hp = 746 watts], 60 Hz, four-pole, Y-connected induction motor has the following impedances in ohms per phase referred to the stator circuit: R₁ = 0.6412, R₂ = 0.33202, X₁ = 1.106 92, X2=0.464 92, XM = 26.3 2. The total rotational losses are 1100 W and are assumed to be constant. The core loss is lumped in with the rotational losses. For a rotor slip of 2.2 percent at the rated voltage and rated frequency, calculate the: (a) motor speed. (b) stator current. (c) power factor. (d) converted power PCON. (e) power output POUT. (f) induced torque and the load torque. (g) motor efficiency.
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