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For the network shown in the figure, find the driving point impedance.(a) (s^2-2s+1)/s(b) (s^2+2s+1)/s(c) (s^2-2s-1)/s(d) (s^2+2s-1)/sThe question was asked in an interview for internship.Question is from Network Function for the One-Port and Two-Port in portion S-Domain Analysis of Network Theory

Answer»

Correct option is (B) (s^2+2s+1)/s

Easy EXPLANATION: Applying Kirchoff’s law at port 1, Z(S)=V(S)/I(S), where V(s) is applied at port 1 and I(s) is current flowinmg through the NETWORK. Then Z(S)=V(S)/I(S) = 2+S+1/S = (s^2+2s+1)/s.



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