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A (18 KW), 420 V, 50 Hz, three phase star connected synchronous Motor with synchronous impedance Zs = 1+j5 ohm per phase is working at rated voltage and rated load. Using circle diagram answer the followings * With excitation voltage equal to (510 V) find the load angle and efficiency. 1 Add file With excitation kept constant find the maximum load that the synchronous motor can carry and the corresponding load angle. 1 Add file *For total load of (14 KW) find the minimum excitation voltage required. Add file If the motor works at power factor of (0.707 leading) find the torque Add file If the motor draw a current.of ( 60 A) with excitation equal to rated voltage find the power input to the motor. Add file

A (18 KW), 420 V, 50 Hz, three phase star connected synchronous Motor with synchronous impedance Zs = 1+j5 ohm per phase is working at rated voltage and rated load. Using circle diagram answer the followings * With excitation voltage equal to (510 V) find the load angle and efficiency. 1 Add file With excitation kept constant find the maximum load that the synchronous motor can carry and the corresponding load angle. 1 Add file *For total load of (14 KW) find the minimum excitation voltage required. Add file If the motor works at power factor of (0.707 leading) find the torque Add file If the motor draw a current.of ( 60 A) with excitation equal to rated voltage find the power input to the motor. Add file

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 (18 KW), 420 V, 50 Hz, three phase star connected synchronous Motor with synchronous impedance Zs = 1+j5 ohm per phase is working at rated voltage and rated load, Using circle diagram answer the followings * With excitation voltage equal to (510 V) find the load angle and efficiency. 1 Add file With excitation kept constant find the maximum load that the synchronous motor can carry and the corresponding load angle. + Add file *For total load of (14 KW) find the minimum excitation voltage required. Add file If the motor works at power factor of (0.707 leading) find the torque Add file if the motor draw a current.of ( 60 A) with excitation equal to rated voltage find the power input to the motor. Add file
Transcribed Image Text:A (18 KW), 420 V, 50 Hz, three phase star connected synchronous Motor with synchronous impedance Zs = 1+j5 ohm per phase is working at rated voltage and rated load, Using circle diagram answer the followings * With excitation voltage equal to (510 V) find the load angle and efficiency. 1 Add file With excitation kept constant find the maximum load that the synchronous motor can carry and the corresponding load angle. + Add file *For total load of (14 KW) find the minimum excitation voltage required. Add file If the motor works at power factor of (0.707 leading) find the torque Add file if the motor draw a current.of ( 60 A) with excitation equal to rated voltage find the power input to the motor. Add file
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