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Power in Series R-C Circuit - h1011v3_74
Power in Parallel R-C Circuit - h1011v3_76
Electrical Science Volume 3 of 4
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Basic AC Power
POWER TRIANGLE
3.
pf
cos
q
q
arctan
X
C
R
cos
arctan
X
C
R
cos
arctan
80
60
cos(arctan( 1.33))
cos( 53°)
pf
0.60
4.
P
EIcos
q
(120)(1.2)(0.60)
P
86.4 watts
5.
Q
EIsin
q
(120)(1.2)(0.798)
Q
114.9 VAR
6.
S
EI
(120)(1.2)
S
144 VA
Rev. 0
Page 9
ES-09
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