Question

For the network of figure, z11 is equal to ___________

(a) \(\frac{5}{3}\) Ω

(b) \(\frac{3}{2}\) Ω

(c) 2 Ω

(d) \(\frac{2}{3}\) Ω

I got this question during an online exam.

My question comes from Advanced Problems on Two Port Network in division Two-Port Networks of Network Theory

Answer 1

Correct answer is (a) \(\frac{5}{3}\) Ω

The explanation is: From the figure, we can infer that,

Z11 = 1 + \(\frac{1 X 2}{3}\)

= 1 + \(\frac{2}{3}\)

= \(\frac{5}{3}\) Ω.