Question

In the circuit shown below, find the transmission parameter B.

(a) 15/5

(b) 17/5

(c) 19/5

(d) 21/5

This question was addressed to me during a job interview.

This interesting question is from Transmission(ABCD) Parameters in portion Two-Port Networks of Network Theory

Answer 1

The correct choice is (b) 17/5

To explain: The transmission parameter B is given by B = -V1/I2|V2=0. Short circuiting b-b^‘, -I2 = 5/17 V1 => -V1/I2 = 17/5. On substituting we get B=17/5 Ω.