Question

At what frequency range do hybrid models work the best?

(a) Very low frequency

(b) Low to moderate frequency

(c) Moderate to high frequency

(d) High frequency

I have been asked this question at a job interview.

I would like to ask this question from Two-Port Devices and Hybrid Model in chapter Small-Signal Low-Frequency AC models of Transistors of Electronic Devices & Circuits

Answer 1

Right option is (b) Low to moderate frequency

Easy explanation: Hybrid models with varying current and voltage work best at low to moderate frequencies. At higher frequencies, we use power and energy variables instead of the current and voltage variables.