1
GATE EE 1992
+1
-0.3
In a common Emitter amplifier, the un bypassed emitter resistance provides
A
Voltage - shunt feedback
B
Current - Series feedback
C
Negative - Voltage feedback
D
Positive - current feedback
2
GATE EE 1992
+1
-0.3
The voltage series feedback in a feedback amplifier leads to
A
increase in band width, while the voltage gain becomes less sensitive to variations in components and device characteristics
B
decrease in overall gain, while the input resistance decreases
C
increase in distortion, while the output resistance decreases
D
decrease in input resistance, while the output resistance increases
3
GATE EE 1992
+2
-0.6
In an $$RC$$- coupled common Emitter amplifier which of the following is true?
A
Coupling Capacitance affects the high frequency $$\left( {hF} \right)$$ response and bypass capacitance affects Low frequency $$\left( {lF} \right)$$ response.
B
Both coupling and by pass capacitances affects the $$lF$$ response.
C
Both coupling and by pass capacitances affects the $$hF$$ response.
D
Coupling Capacitance affects the $$lf$$ response and the bypass capacitance affects the $$hF$$ response.
4
GATE EE 1992
Subjective
+5
-0
For the $$JFET$$ amplifier shown in figure $$\mu = 100,\,{r_d} = 50k\Omega$$
$$(i)$$ Draw the $$AC$$ equivalent circuit
$$(ii)$$ Find the voltage gain of the amp
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