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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
Three-phase Systems and Circuits 407
19. In a three-phase system, the EMFs are
(a) 30° apart (b) 45° apart (c) 60° apart (d) 120° apart
20. Power absorbed by a three-phase load is given by
(a)
3VI
PP
sinf
(b)
3VI
LL
sinf
(c)
3VI
LL
cosf
(d)
3VI
PP
cosf
21. The phenomenon of neutral shift occurs in
(a) three-phase three-wire system feeding balanced star-connected load
(b) three-phase three-wire system feeding an unbalanced star-connected load.
(c) three-phase four-wire system
(d) none of these
22. Neutral shift voltage is given by
(a)
V
VVV
ZZZ
on
an bn cn
abc
=
++
++
(b)
V
VVV
YYY
on
an bn cn
abc
=
++
++
(c)
V
VY VY VY
ZZZ
on
an an bn
bcnc
abc
=
++
++
(d) ...
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Publisher Resources

ISBN: 9789332547261