Question

For a 2-port network, the value of the h parameter is as h=[600, 0.04; 30, 2×10^-3]. Given that, ZS = 2 kΩ and ZL = 400 Ω. The value of the parameter Zin is ______________ (a) 250 Ω (b) 333.33 Ω (c) 650 Ω (d) 600 Ω The question was asked during a job interview. My enquiry is from Advanced Problems Involving Parameters in portion 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) 333.33 Ω To explain I would say: Zin = hie – \frac{h_{re} h_{fe} R_L}{1 + h_{oe} R_L} = h11 – \frac{h_{12} h_{21} R_L}{1+h_{22} R_L} = 600 – \frac{0.04×30×400}{1+2×10^{-3}×400} = 333.33 Ω.