Page 380 - Basic Electrical Engineering

Example 3.32 In a series–parallel circuit shown in Fig. 3.65, the parallel
branches A, B, and C are in series with branch D. Calculate:

i. the impedance of the overall circuit,
ii. current taken by the circuit, and
iii. power consumed by each branch and the total power consumed.

Figure 3.65

Solution:

(i) Impedance of branch A,

Z = 2 + j0 = 2 Ω
A

Impedance of branch B,

Impedance of branch C, Z = (2 – j2) Ω
C

Equivalent impedance of the parallel circuit,