Two networks are connected in series parallel connection. Then, the forward short-circuit current gain of the network is ____________(a) Product of Z-parameter matrices(b) Sum of h-parameter matrices(c) Sum of Z-parameter matrices(d) Product of h-parameter matricesThe question was posed to me in unit test.This question is from Series-Series Connection of Two Port Network topic in section Two-Port Networks of Network Theory

Two networks are connected in series parallel connection. Then, the fo

1.	Two networks are connected in series parallel connection. Then, the forward short-circuit current gain of the network is ____________(a) Product of Z-parameter matrices(b) Sum of h-parameter matrices(c) Sum of Z-parameter matrices(d) Product of h-parameter matricesThe question was posed to me in unit test.This question is from Series-Series Connection of Two Port Network topic in section Two-Port Networks of Network Theory
Answer» Right choice is (b) Sum of h-parameter matrices For EXPLANATION: The forward short circuit CURRENT gain is given by, h21 =\(\FRAC{I_2 (s)}{I_1 (s)}\), when V2 = 0 So, when the two networks are connected in series parallel combination, [H11, h12; h21, h22] = [h’11 + h’11, h’12 + h’12; h’21 + h’21, h’22 + h’22] So, h21 of total network will be sum of h parameter matrices.

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