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a 4-pole, 415V/60Hz three-phase squirrel-cage induction motor is Y-connected and has a rated speed of 1470rpm and R2=0.28N R°2= 0.210, X;=X'2= 0.422 Xm= 552. 1. If the motor is operated at speed of 2058rpm and Volt-per-Hertz control is used: 1. What would be the voltage? 2. What would be the frequency of the supply? (in Hz) 3. In this case, the motor is operating in what region? Oa. Constant speed Ob. Constant Power Oc. Constant power and torque Od. Constant Torque Oe. Cannot be specified. More information is needed

a 4-pole, 415V/60Hz three-phase squirrel-cage induction motor is Y-connected and has a rated speed of 1470rpm and R2=0.28N R°2= 0.210, X;=X'2= 0.422 Xm= 552. 1. If the motor is operated at speed of 2058rpm and Volt-per-Hertz control is used: 1. What would be the voltage? 2. What would be the frequency of the supply? (in Hz) 3. In this case, the motor is operating in what region? Oa. Constant speed Ob. Constant Power Oc. Constant power and torque Od. Constant Torque Oe. Cannot be specified. More information is needed

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 4-pole, 415V/60Hz three-phase squirrel-cage induction motor is Y-connected and has a rated speed of 1470rpm and R =0.282, R'2= 0.210, X1=X'2= 0.420, Xm= 55N. 1. If the motor is operated at speed of 2058rpm and Volt-per-Hertz control is used: 1. What would be the voltage? 2. What would be the frequency of the supply? (in Hz) 3. In this case, the motor is operating in what region? a. Constant speed b. Constant Power Oc. Constant power and torque d. Constant Torque Oe. Cannot be specified. More information is needed 2. If Volt-per-Hertz control is used and the voltage is 375, find: 1. what should be the frequency? (in Hz) 2. What is the maximum torque in this case?
Transcribed Image Text:a 4-pole, 415V/60Hz three-phase squirrel-cage induction motor is Y-connected and has a rated speed of 1470rpm and R =0.282, R'2= 0.210, X1=X'2= 0.420, Xm= 55N. 1. If the motor is operated at speed of 2058rpm and Volt-per-Hertz control is used: 1. What would be the voltage? 2. What would be the frequency of the supply? (in Hz) 3. In this case, the motor is operating in what region? a. Constant speed b. Constant Power Oc. Constant power and torque d. Constant Torque Oe. Cannot be specified. More information is needed 2. If Volt-per-Hertz control is used and the voltage is 375, find: 1. what should be the frequency? (in Hz) 2. What is the maximum torque in this case?
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