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Network Analysis and Synthesis, 1st Edition by Pearson
book

Network Analysis and Synthesis, 1st Edition by Pearson

by S. K. Bhattacharya, Manpreet Singh
December 2015
Intermediate to advanced
737 pages
23h 39m
English
Pearson India
Content preview from Network Analysis and Synthesis, 1st Edition by Pearson
Steady State Analysis of AC Circuits 101
3.5 APPARENT POWER, REAL POWER AND REACTIVE POWER
Apparent power S = rms value of voltage × rms value of current
or S = VI
The apparent power is expressed in volt-ampere, that is, VA or in kilo-volt ampere is kVA.
Real power or active power P or W = Apparent power × Power factor
or P = VI cos f. Watts or kilo-Watts
Reactive power Q = VI sin f VAR or kilo-VAR.
These three types of powers are related as given in the following:
or
SPQ
SPQ
222
22
22
=+
=+
=+KVA KW KVAR()()
or
SPQ
SPQ
222
22
22
=+
=+
=+
KVA KW KVAR()
()
3.6 POWER IN R–L SERIES CIRCUIT
Let us now develop a general expression for power in an AC circuit by considering ...
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Publisher Resources

ISBN: 9789332547261