Question

How do we calculate the value of hybrid parameter h12 if V2 = 20V and V1 = 50V in a two – port device?

(a) 0.04

(b) 0.25

(c) 0.4

(d) 2.5

I got this question in an interview for internship.

The origin of the question is Determination of the H-Parameters in chapter Small-Signal Low-Frequency AC models of Transistors of Electronic Devices & Circuits

Answer 1

Correct answer is (d) 2.5

Explanation: To find the hybrid parameter h12 we use the below mentioned formula. Given values are V2 = 20V and V1 = 50V.

h21 = V1 / V2 = 50 / 20 = 2.5.