GATE 2024 Analog Circuits Foundation Quiz 8

Which of the following gain equations is correct for a MOSFET common-source amplifier? ( Is trans-conductance and is load resistance at the drain)

An open transistor (with c = 1pF) has a unity-gain cut of frequency f₁ 200 MHz at a dc bias current I_C = 10 mA. The value off C_μ (in pF) is _______ (V_T = 2.6 mV)

(upto one decimal point)

The h_FE values in the specification sheet of a transistor are h_FE(max) = 225 and h_FE(min) = 64 . What value of h_FE is to be adopted in practice?

Consider an amplifier circuit shown in the figure below.

The voltage gain of the circuit is equal to ___________ (Assume V_T = 25 mV and V_BE = 0.7 V)

The DC voltage gain in the following circuit is given by