Question

Q 2. Find the power supplied by the generator in figure 2. (25 Points) R1 = 18 Ω 1Ω 6Ω 6Ω 20 V+ 6Ω 18Ω

Answer 1

In above circuit, power is absorbed by the resistance and supplied by source. To find total current flowing through circuit, we have to find equivalent resistance. Converting star network to delta network Since R_1 = R_2 = R_3 = 6 Ohm R_a = R_b = R_c = 3 times 6 = 18 Ohm (In star delta conversion R_a = R_1 R_2 R_2 R_3 + R_1 R_3/R_1) = 6 times 6 + 6 times 6 + 6 times 6/6 = 18 Ohm (Converting star N/w to delta N/w &) Converting 18 Ohm Vertical-bar Vertical-bar 18 Ohm (Parallel combination of 18 Ohm with 18 Ohm) \r\n 9 Ohm 49 Ohm are in series, equivalent is sum of both Therefore total current flowing through circuit I = V/R = 20 V/10 Ohm = 2A Therefore Power supplied by generator P = V . I = 20 times 2 P = 40 W