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A three-phase, star-connected, 7460 kw, 6000V, 50 Hz synchronous motor Its efficiency is 92% when feeding a load with a power factor of 0.8 forward. The armature resistance of this motor is 0.5 Ohm and the synchronous reactance is 4.2ohm. Statur windings are connected to an infinitely powerful system. A mechanical load equal to 75% of the rated load is connected to the shaft of the motor. According to this; a) Calculate the amplitude value of the current passing through the phase winding of the motor. (calculate in A) b) Calculate pole wheel voltage induced into motor. (calculate in V) c) Calculate the load angle. (calculate in V) d) Calculate the value of the internal phase angle.

A three-phase, star-connected, 7460 kw, 6000V, 50 Hz synchronous motor Its efficiency is 92% when feeding a load with a power factor of 0.8 forward. The armature resistance of this motor is 0.5 Ohm and the synchronous reactance is 4.2ohm. Statur windings are connected to an infinitely powerful system. A mechanical load equal to 75% of the rated load is connected to the shaft of the motor. According to this; a) Calculate the amplitude value of the current passing through the phase winding of the motor. (calculate in A) b) Calculate pole wheel voltage induced into motor. (calculate in V) c) Calculate the load angle. (calculate in V) d) Calculate the value of the internal phase angle.

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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A three-phase, star-connected, 7460 kW, 6000V, 50 Hz synchronous motor Its efficiency is 92% when feeding a load with a power factor of 0.8 forward. The armature resistance of this motor is 0.5 Ohm and the synchronous reactance is 4.2ohm. Statur windings are connected to an infinitely powerful system. A mechanical load equal to 75% of the rated load is connected to the shaft of the motor. According to this; a) Calculate the amplitude value of the current passing through the phase winding of the motor. (calculate in A) b) Calculate pole wheel voltage induced into motor. (calculate in V) c) Calculate the load angle. (calculate in V) d) Calculate the value of the internal phase angle.
Transcribed Image Text:A three-phase, star-connected, 7460 kW, 6000V, 50 Hz synchronous motor Its efficiency is 92% when feeding a load with a power factor of 0.8 forward. The armature resistance of this motor is 0.5 Ohm and the synchronous reactance is 4.2ohm. Statur windings are connected to an infinitely powerful system. A mechanical load equal to 75% of the rated load is connected to the shaft of the motor. According to this; a) Calculate the amplitude value of the current passing through the phase winding of the motor. (calculate in A) b) Calculate pole wheel voltage induced into motor. (calculate in V) c) Calculate the load angle. (calculate in V) d) Calculate the value of the internal phase angle.
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