If the supply voltages to a 3-phase, 4-wice system are balanced The three phase load currents must be balanced The load individual phases must have the same power factor The individual phase frequencies may vary The three phase load currents may not be balanced

If the supply voltages to a 3-phase, 4-wice system are balanced The three phase load currents must be balanced The load individual phases must have the same power factor The individual phase frequencies may vary The three phase load currents may not be balanced

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

Nodal Analysis

In the analysis of any electric circuit, nodal analysis is the method of determining the potential difference or voltage between different nodes in an electric circuit. A node is a point where two or more branches connect each other. In the nodal analysis, the voltages are determined in the terms of branch currents. The nodal analysis is also known as the node voltage method or branch current method. The nodal analysis method is one of the several applications of Kirchhoff's Current Law (KCL).

Question

If the supply voltages to a 3-phase, 4-wire system are balanced
The three phase load currents must be balanced
The load individual phases must have the same power factor
The individual phase frequencies may vary
The three phase load currents may not be balanced
What is the number of large power stations in the UK (i.e. stations greater than 1000MW)

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