Question

For the 2 port network as shown below, the Z-matrix is ___________ (a) [Z1; Z1 + Z2; Z1 + Z2; Z3] (b) [Z1; Z1; Z1 + Z2; Z2] (c) [Z1; Z2; Z2; Z1 + Z2] (d) [Z1; Z1; Z1; Z1 + Z2] I got this question at a job interview. My doubt stems from Inverse Hybrid (g) Parameter topic 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 option is (d) [Z1; Z1; Z1; Z1 + Z2] To explain I would say: z11 = \frac{V_1}{I_1} , when I2 = 0 z22 = \frac{V_2}{I_2} , when I1 = 0 z12 = \frac{V_1}{I_2} , when I1 = 0 z21 = \frac{V_2}{I_1} , when I2 = 0 Now, in the given circuit putting I1 = 0, we get, z12 = Z1 and z22 = Z1 + Z2 And putting I2 = 0, we get, z21 = Z1 and z11 = Z1.