Question

Which one of the following parameters does not exist for the two-port network in the circuit given below? (a) h (b) Y (c) Z (d) g The question was posed to me during an interview. My question is from Inverse Hybrid (g) Parameter topic in division 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

Right answer is (c) Z Explanation: Y-parameter = \frac{1}{Z} [1; -1; -1; 1] And from the definition of the Y parameters, ∆Y = 0. Therefore the Y-parameter exists. Since ∆Y = 0, so by property of reciprocity, ∆h = 0 and ∆g = 0. Hence both hybrid and inverse hybrid parameters exist. But the Z-parameters cannot exist here because if one terminal is opened the circuit will become invalid. ∴ Z- parameters do not exists.