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Power in Parallel R-L Circuit - h1011v3_72
Power in Series R-C Circuit - h1011v3_74
Electrical Science Volume 3 of 4
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54
Basic AC Power
POWER TRIANGLE
Solution:
2.
pf
cos
q
q
arctan
I
L
I
R
cos
arctan
I
L
I
R
cos
arctan
2.2
0.73
cos(arctan( 3))
cos( 71.5°)
pf
0.32
3.
P
EIcos
q
(440)(2.3)(0.32)
P
323.84 watts
4.
Q
EIsin
q
(440)(2.3)(0.948)
Q
959.4 VAR
Rev. 0
Page 7
ES-09
