Question

Which model is similar to the high frequency T model?

(a) G model

(b) Hybrid-pi model

(c) Inverse G model

(d) Z model

This question was addressed to me in an internship interview.

The question is from The High Frequency T Model topic in portion High Frequency Transistor of Electronic Devices & Circuits

Answer 1

Correct answer is (b) Hybrid-pi model

For explanation I would say: The Hybrid-pi model is similar to the high frequency T model. The T model can use either a voltage or a current as the variable that controls the current source. In the T model, the current source’s expression is either gm VBE or αIE.