Question

How do we calculate the value of hybrid parameter h12 if V2 = 20V and V1 = 50V in a high frequency T model?

(a) 0.04

(b) 0.25

(c) 0.4

(d) 2.5

This question was addressed to me in final exam.

My question comes from The High Frequency T Model in chapter High Frequency Transistor of Electronic Devices & Circuits

Answer 1

Right choice is (d) 2.5

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

h21 = V1 / V2 = 50 / 20 = 2.5