GATE EE
Analog Electronics
Small Signal Modeling
Previous Years Questions

## Marks 1

For an ideal MOSFET biased in saturation, the magnitude of the small signal current gain for a common drain amplifier is
In the single stage transistor amplifier circuit shown in figure, the capacitor $${C_E}$$ is removed. Then the ac small signal midband voltage gain of...
In the transistor amplifier shown in figure, the ratio of small signal voltage gain when the emitter resistor is bypassed by the capacitor $$'{C_e}'$$...

## Marks 2

The transconductance $${g_m}$$ of the transistor shown in figure is $$10$$ $$mS.$$ The value of input resistance $${R_{in}}$$ is ...

## Marks 5

The transistor in the amplifier circuit shown in the figure is biased at $${{\rm I}_C} = mA.$$ Use $${V_T}\left( { = {{kT} \over q}} \right) = 26\,mV,... A current amplifier has an input resistance of$$10\Omega ,$$an output resistance of$$10\,\,k\Omega $$and a Current gain of$$1000.$$It is feed by... For the small signal$$BJT$$amplifier shown in given figure. Determine at$$1kHz$$the following$$(a)\,\,\,\,\,\,\,\,$$Quiescent colle... For the$$JFET$$amplifier shown in figure$$\mu = 100,\,{r_d} = 50k\Omega (i)$$Draw the$$AC$$equivalent circuit$$(ii)$$Find the voltage g... Figure shows a common emitter amplifier$$(a)$$Simplify the circuit by applying thevenin's theorem to biasing network$${R_1},{R_2}$$at$$\,\,...
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