POWER TRIANGLE
Basic AC Power
3.
P
EI cosq
(412.3)(2)(0.97)
P
799.86 watts
4.
Q
EI sinq
(412.3)(2)(0.242)
Q
199.6 VAR
5.
S
EI
(412.3)(2)
S
824.6 VA
Power in Parallel R-L Circuit
Example: A 600 W resistor and
Figure 5 Parallel R-L Circuit
200 W XL are in parallel with a
440V source, as shown in Figure
5.
Find: 1. IT
2. pf
3. P
4. Q
5. S
ES-09
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