Question

In two-port networks the parameter h21 is called _________ (a) Short circuit input impedance (b) Short circuit current gain (c) Open circuit reverse voltage gain (d) Open circuit output admittance I have been asked this question in unit test. My enquiry is from Hybrid (h) Parameter topic 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

The correct choice is (b) Short circuit current gain Best explanation: We know that, h21 = \frac{I_2}{I_1} , when V2 = 0. Since the second output terminal is short circuited when the ratio of the two currents is measured, therefore the parameter h21 is called Short circuit current gain.