Question

If temperature changes, h parameters of a transistor _____

(a) also change

(b) does not change

(c) remains same

(d) may or may not change

I got this question during an interview.

Asked question is from Transistor Hybrid Model topic in chapter Small-Signal Low-Frequency AC models of Transistors of Electronic Devices & Circuits

Answer 1

Correct choice is (a) also change

Explanation: It is very difficult to get exact values of h parameters for a particular transistor. It is because these parameters are subject to considerable variation unit to unit variation, variation due to change in temperature and variation due to the operating point.