1. A lighting load of 600 kW and a motor load of 707 kW at 0.707 lag are supplied by two alternators running in parallel. One of the machines supplies 900 kW at 0-9 p.f. lagging. Find the load and p.f. of the second machine. [407 kW; 0-7916 lag]

1. A lighting load of 600 kW and a motor load of 707 kW at 0.707 lag are supplied by two alternators running in parallel. One of the machines supplies 900 kW at 0-9 p.f. lagging. Find the load and p.f. of the second machine. [407 kW; 0-7916 lag]

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

1. A lighting load of 600 kW and a motor load of 707 kW at 0.707 lag are supplied by two alternators running
in parallel. One of the machines supplies 900 kW at 0-9 p.f. lagging. Find the load and p.f. of the second
machine.
[407 kW; 0-7916 lag]

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