In the circuit given below, the maximum power absorbed by the load resistance RL is ___________(a) 2200 W(b) 1250 W(c) 1000 W(d) 621 WI got this question during an interview for a job.The above asked question is from Advanced Problems on Reciprocity Theorem in portion Useful Theorems in Circuit Analysis of Network Theory

In the circuit given below, the maximum power absorbed by the load res

1.	In the circuit given below, the maximum power absorbed by the load resistance RL is ___________(a) 2200 W(b) 1250 W(c) 1000 W(d) 621 WI got this question during an interview for a job.The above asked question is from Advanced Problems on Reciprocity Theorem in portion Useful Theorems in Circuit Analysis of Network Theory
Answer» The correct CHOICE is (d) 621 W To EXPLAIN: RL = \(\sqrt{R_{TH}^2+X_{TH}^2}\) = \(\sqrt{3^2+4^2}\) = 5 Now, 110 = (6 + j8 + 5) I1 + 5I2 And 90 = (6 + j8 + 5) I2 = 5I1 ∴ I1 = 5.5 – 2.75j and I2 = 4.5 – 2.2j Total current in RL = I1 + I2 = (10 – 4.95j) A = 11.15 A ∴ Power absorbed by RL = I^2R = 11.15^2 × 5 = 621 W.

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