Question

In the circuit shown below, find the thevenin’s voltage across ‘ab’ terminals. (a) 48.5∠40.35⁰ (b) 48.5∠-40.35⁰ (c) 49.5∠-40.35⁰ (d) 49.5∠40.35⁰ The question was asked during an internship interview. I'm obligated to ask this question of Thevenin’s Theorem in section Steady State AC 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

Right option is (d) 49.5∠40.35⁰ For explanation: Though the thevenin’s equivalent circuit is not same as its original circuit, the output current and voltage are the same in both cases. The thevenin’s voltage is equal to the voltage across (4+j6)Ω impedance. VTh =50∠0^o×(4+j6)/((4+j6)+(3-j4))=49.5∠40.35⁰V.