POWER TRIANGLE
Basic AC Power
Power in Series R-C-L Circuit
Figure 8 Series R-C-L Circuit
Example: An 8 W resistance, a 40 W XL,
and a 24 W XC are in series with a 60 Hz
source with a current flow of 4 amps, as
shown in Figure 8.
Find: 1. Z
2. VT
3. pf
4. P
5. Q
6. S
1.
Z
R2
(XL
XC)2
82
(40
24)2
82
162
Z
17.9 W
2.
VT
IZ
(4)(17.9)
VT
71.6 volts
ES-09
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