Page 358 - Basic Electrical Engineering
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2
= (20) + (60 − 30)2
= 1300
or, V = 36 V
Power factor
Power factor angle, ϕ = 56.6°
Since current I is lagging V by an angle ϕ = 56.6°, the power factor is taken
as lagging power factor.
Example 3.21 In the circuit shown in Fig. 3.48, calculate the value of R
and C.
Figure 3.48
Solution:
Current I is leading V by degrees.
Taking V as the reference axis,
