Question

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 W I 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 Select the correct answer from above options network theory questions and answers, network theory questions pdf, network theory question bank, network theory gate questions and answers pdf, mcq on network theory pdf, gate network theory questions and solutions, network theory mcq Test , ies network theory questions, Network theory Questions for GATE EC Exam, Network Theory MCQ (Multiple Choice Questions)

Answer 1

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.