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On no load at 500-V, a certain 3-phase, 50-Hz, 4-pole induction motor takes 16 A at a power factor of 0-2. With the rotor locked and 125 V applied, it takes 37-5 A at 0-3 p.f. If, when the motor is running at full load and supplied at 500 V, the power factor is at its maximum, estimate the full-load current, power factor, torque, speea, output and efficiency. Also estimate the starting torque and maximum torque at full line voltage. Assume R2' = By considering the circle diagram and its basis, how would you expect the per- formance to be affected if the motor was run from a 500-V, 60-Hz supply? 1-3 R1.

On no load at 500-V, a certain 3-phase, 50-Hz, 4-pole induction motor takes 16 A at a power factor of 0-2. With the rotor locked and 125 V applied, it takes 37-5 A at 0-3 p.f. If, when the motor is running at full load and supplied at 500 V, the power factor is at its maximum, estimate the full-load current, power factor, torque, speea, output and efficiency. Also estimate the starting torque and maximum torque at full line voltage. Assume R2' = By considering the circle diagram and its basis, how would you expect the per- formance to be affected if the motor was run from a 500-V, 60-Hz supply? 1-3 R1.

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
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On no load at 500-V, a certain 3-phase, 50-Hz, 4-pole induction motor takes 16 A at a power factor of 0-2. With the rotor locked and 125 V applied, it takes 37-5 A at 0-3 p.f. If, when the motor is running at full load and supplied at 500 V, the power factor is at its maximum, estimate the full-load current, power factor, torque, speed, output and efficiency. Also estimate the starting torque and maximum torque at full line voltage. Assume R2' = 1-3 R1. By considering the circle diagram and its basis, how would you expect the per- formance to be affected if the motor was run from a 500-V, 60-Hz supply?
Transcribed Image Text:On no load at 500-V, a certain 3-phase, 50-Hz, 4-pole induction motor takes 16 A at a power factor of 0-2. With the rotor locked and 125 V applied, it takes 37-5 A at 0-3 p.f. If, when the motor is running at full load and supplied at 500 V, the power factor is at its maximum, estimate the full-load current, power factor, torque, speed, output and efficiency. Also estimate the starting torque and maximum torque at full line voltage. Assume R2' = 1-3 R1. By considering the circle diagram and its basis, how would you expect the per- formance to be affected if the motor was run from a 500-V, 60-Hz supply?
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