Question

The relation between Z12 and Y parameters is?

(a) Z12 = Y12/∆y

(b) Z12 = (-Y12)/∆y

(c) Z12 = (-Y22)/∆y

(d) Z12 = Y22/∆y

I had been asked this question by my school principal while I was bunking the class.

My question is from Inner Relationships of Different Parameters in division Two-Port Networks of Network Theory

Answer 1

The correct choice is (b) Z12 = (-Y12)/∆y

The explanation: V1=(Y22/∆y)I1-(Y12/∆y)I2. The relation between Z12 and Y parameters is Z12 = (-Y12)/∆y.