A 3-phase 100 kVA, 2300 volts, 60 Hz, 4-pole wye connected alternator having a synchronous impedance of 1.2 +j 20 ohms per phase delivers 34.5 kW at 0.866 power factor, current lagging, to a 2300 volts line. Compute the voltage regulation. A. 10% C. 8% D. 7% B. 9%

A 3-phase 100 kVA, 2300 volts, 60 Hz, 4-pole wye connected alternator having a synchronous impedance of 1.2 +j 20 ohms per phase delivers 34.5 kW at 0.866 power factor, current lagging, to a 2300 volts line. Compute the voltage regulation. A. 10% C. 8% D. 7% B. 9%

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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Concept explainers

Synchronous Generator

In comparison to an asynchronous generator, it is a machine where the rotor speed is equal to the rotating magnetic field produced by the stator, i.e., mechanical speed is equal to the electrical speed, thus called synchronous, and not asynchronous.

Salient Pole Rotor

Salient pole rotor includes a large number of exposed poles mounted on a magnetic wheel. The construction of a bright pole is as shown in the image on the left. The proposed poles are made of metal laminations. The rotor winding is provided on these poles and is supported by pole shoes.

Question

A 3-phase 100 kVA, 2300 volts, 60 Hz, 4-pole wye connected alternator having a
synchronous impedance of 1.2 +j 20 ohms per phase delivers 34.5 kW at 0.866 power
factor, current lagging, to a 2300 volts line. Compute the voltage regulation.
A. 10%
C. 8%
D. 7%
B. 9%

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