A 460 V, 25 Hp, 60 Hz, 4-pole, Wye-connected rotor has the following omega/phase impedances referred to the stator circuit. R1=0.641 ohms, X1=1.106 ohms, R2=0.332 ohms, X2=0.464 ohms, Xm=26.3 ohms. A) Torque max, ans Smax and wm at which T max occurs? B) Start of torque C) If R2 is doubled, at what speed is maximum torque produced?, D) Plot the original torque-speed curves and the adjusted T (with R2 doubled)
A 460 V, 25 Hp, 60 Hz, 4-pole, Wye-connected rotor has the following omega/phase impedances referred to the stator circuit. R1=0.641 ohms, X1=1.106 ohms, R2=0.332 ohms, X2=0.464 ohms, Xm=26.3 ohms. A) Torque max, ans Smax and wm at which T max occurs? B) Start of torque C) If R2 is doubled, at what speed is maximum torque produced?, D) Plot the original torque-speed curves and the adjusted T (with R2 doubled)
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, 4-pole, Wye-connected rotor has the following omega/phase impedances referred to the stator circuit. R1=0.641 ohms, X1=1.106 ohms, R2=0.332 ohms, X2=0.464 ohms, Xm=26.3 ohms. A) Torque max, ans Smax and wm at which T max occurs? B) Start of torque C) If R2 is doubled, at what speed is maximum torque produced?, D) Plot the original torque-speed curves and the adjusted T (with R2 doubled)
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