Discussion
What does the h-parameter description treat the transistor as?
Answer: C
The h-parameters describe the device as a two-port black box with an input impedance, a reverse voltage ratio, a forward current ratio and an output conductance. The voltage-controlled current source picture is the hybrid-pi model that largely replaced it. The black-box approach makes no assumption about the physics inside, which is its strength for measurement and its weakness for insight. Checking the units of each quantity catches a wrong formula before the arithmetic begins.
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