Question

Determine the input impedance of the network shown below. (a) 4.25 (b) 3.25 (c) 2.25 (d) 1.25 I had been asked this question in a job interview. My doubt is from Terminated Two-Port Network in chapter Two-Port Networks 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

Correct choice is (b) 3.25 For explanation: From the figure by inspection we can say that the source resistance is 1Ω. So Zin = (V1/I1) + Source resistance. We had V1/I1 = 2.25. On substituting Zin=1+2.25=3.25Ω.