Q1. A supply system feeds the following loads (i) a lighting load of 500 kW (ii) a load of 400 kW at a p.f. of 0-707 lagging (ii) a load of 800 kW at a p.f. of 0-8 leading (iv) a load of 500 kw at a p.f. 0-6 lagging (v) a synchronous motor driving a 540 kW d.c. generator and having an overall efficiency of 90%. Calculate the power factor of synchronous motor so that the station power factor may become unity.

Q1. A supply system feeds the following loads (i) a lighting load of 500 kW (ii) a load of 400 kW at a p.f. of 0-707 lagging (ii) a load of 800 kW at a p.f. of 0-8 leading (iv) a load of 500 kw at a p.f. 0-6 lagging (v) a synchronous motor driving a 540 kW d.c. generator and having an overall efficiency of 90%. Calculate the power factor of synchronous motor so that the station power factor may become unity.

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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Q1. A supply system feeds the following loads (i) a lighting load of 500 kw (ii) a load of 400 kW at a p.f.
of 0-707 lagging (ii) a load of 800 kW at a p.f. of 0-8 leading (iv) a load of 500 kW at a p.f. 0-6 lagging (v) a
synchronous motor driving a 540 kW d.c. generator and having an overall efficiency of 90%. Calculate
the power factor of synchronous motor so that the station power factor may become unity.

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