Question

For the circuit given below, the values of the h parameter is given as follows h = [16, 3; -2, 0.01]. The value of the ratio \frac{I_2}{I_1} is ______________ (a) 0.3299 (b) 0.8942 (c) -1.6 (d) 0.2941 The question was asked during an internship interview. My query is from Advanced Problems Involving Parameters in section 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 answer is (c) -1.6 The explanation: Replacing the given 2-port circuit by an equivalent circuit and applying nodal analysis, we get, V2 = (20) (2I1) = 40 I1 Or, -10 + 20I1 + 3V2 = 0 Or, 10 = 20I1 + (3) (40I1) = 140I1 ∴ I1 = \frac{1}{14} and V2 = \frac{40}{14} So, V1 = 16I1 + 3V2 = \frac{136}{14} And I2 = (\frac{100}{125} ) (2I1) = \frac{-8}{70} ∴ \frac{I_2}{I_1} = -1.6.