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The open circuit line voltage and short circuit line current of a 150 kVA, 480-VL, 50 Hz, delta- connected synchronous generator were measured to be 520 V and 250 A, respectively at the rated field current of 5 A. A DC current of 32 A was measured when a DC voltage of 9 V was applied to the terminals of the generator. a. Calculate the value of the armature resistance. CONFIDENTIAL b. Determine the value of the synchronous reactance and synchronous impedance. [CLO3-PLO2:C4] c. Illustrate the phasor diagram and estimate the terminal voltage if the generator delivers total power of 120 kVA to a 3-phase balanced delta connected inductive load with impedance of 5 2 per phase and lagging power factor of 0.83.

The open circuit line voltage and short circuit line current of a 150 kVA, 480-VL, 50 Hz, delta- connected synchronous generator were measured to be 520 V and 250 A, respectively at the rated field current of 5 A. A DC current of 32 A was measured when a DC voltage of 9 V was applied to the terminals of the generator. a. Calculate the value of the armature resistance. CONFIDENTIAL b. Determine the value of the synchronous reactance and synchronous impedance. [CLO3-PLO2:C4] c. Illustrate the phasor diagram and estimate the terminal voltage if the generator delivers total power of 120 kVA to a 3-phase balanced delta connected inductive load with impedance of 5 2 per phase and lagging power factor of 0.83.

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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The open circuit line voltage and short circuit line current of a 150 kVA, 480-VL, 50 Hz, delta- connected synchronous generator were measured to be 520 V and 250 A, respectively at the rated field current of 5 A. A DC current of 32 A was measured when a DC voltage of 9 V was applied to the terminals of the generator. a. Calculate the value of the armature resistance. CONFIDENTIAL b. Determine the value of the synchronous reactance and synchronous impedance. [CLO3-PLO2:C4] c. Illustrate the phasor diagram and estimate the terminal voltage if the generator delivers total power of 120 kVA to a 3-phase balanced delta connected inductive load with impedance of 5 2 per phase and lagging power factor of 0.83.
Transcribed Image Text:The open circuit line voltage and short circuit line current of a 150 kVA, 480-VL, 50 Hz, delta- connected synchronous generator were measured to be 520 V and 250 A, respectively at the rated field current of 5 A. A DC current of 32 A was measured when a DC voltage of 9 V was applied to the terminals of the generator. a. Calculate the value of the armature resistance. CONFIDENTIAL b. Determine the value of the synchronous reactance and synchronous impedance. [CLO3-PLO2:C4] c. Illustrate the phasor diagram and estimate the terminal voltage if the generator delivers total power of 120 kVA to a 3-phase balanced delta connected inductive load with impedance of 5 2 per phase and lagging power factor of 0.83.
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