Question

If for a circuit the value of the h parameter is given as h = [8, 2/3; -2/3, 4/9]. Then the value of the voltage source V is _________________

(a) 2.38 V

(b) 1.19 V

(c) 1.6 V

(d) 3.2 V

I had been asked this question in final exam.

The above asked question is from Advanced Problems Involving Parameters in section Two-Port Networks of Network Theory

Answer 1

Right choice is (b) 1.19 V

The best explanation: 8I1 + \(\frac{2}{3V_2}\) = 10

V2 = \(\frac{2}{3}\)I1 (5||\(\frac{9}{4}\))

= \(\frac{2}{3}\)I1 \((\frac{45}{29})= \frac{30}{29}I_1\)

I1 = \(\frac{29}{30}\)V2

(8)(\(\frac{29}{30}\)) V2 + \(\frac{2}{3}\)V2 = 10

V2 = \(\frac{300}{252}\) = 1.19 V.