A Generalized FET Amplifier MCQ’s

Electronic Devices & Circuits Electronics & Communication Engineering

This set of Electronic Devices & Circuits Multiple Choice Questions & Answers (MCQs) focuses on “A Generalized FET Amplifier”.

1. If a certain drain JFET has a transconductance of 4ms. And has external drain resistance of 1.5 ohm than ideal voltage gain will be _________
a) 4
b) 5
c) 6
d) 8

2. Input resistance of common gate of the amplifier is __________
a) zero
b) infinity
c) extremely low
d) extremely high

3. Ideal maximum voltage for common drain amplifier is _________
a) 0
b) 1
c) 0.5
d) 2

4. A FET circuit has a transconductance of 2500 µ seconds and drain resistance equals to 10Kohms than voltage gain will be __________
a) 20
b) 25
c) 30
d) 35

5. A common gate amplifier has _______
a) low input impedance
b) high input impedance
c) infinite input impedance
d) no impedance

6. A common source amplifier has _______
a) no source resistance
b) no drain resistance
c) no gate resistance
d) low input impedance

7. Voltage gain of common drain amplifier is always slightly less than _____
a) 0.5
b) 1
c) 1.5
d) 2

8. D-MOSFET in case of common source amplifier can operate with gate to source voltage zero at ______
a) Peak positive point
b) Peak negative point
c) Q point
d) Origin

9. The drain of FET is analogous to BJT
a) collector
b) emitter
c) base
d) drain

10. Input signal of common drain amplifier is applied to the gate through ________
a) input resistor
b) coupling capacitor
c) output capacitor
d) transformer

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