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Aim

Theory

Pretest

Procedure

Simulation

Posttest

References

Contributors

Feedback

Frequency Response of CS Amplifier

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1. Which of the following statement is true about FET common source amplifier compared to BJT amplifier?

a: it has high input impedance Explanation

Explanation

b: it has low input impedance Explanation

Explanation

c: no input voltage is needed Explanation

Explanation

d: input voltage is needed Explanation

Explanation

2. An amplifier is designed using fixed bias configuration, what is its input impedance?

a: RD||rd Explanation

Explanation

b: RD+rd Explanation

Explanation

c: 0 Explanation

Explanation

d: RG Explanation

Explanation

3. What is the reason for connecting a capacitor in parallel with Rs

a: It blocks the noise Explanation

Explanation

b: For ac signal it acts a short circuit resulting in grounding source terminal Explanation

Explanation

c: It blocks the noise and for ac signal it acts a short circuit resulting in grounding source terminal Explanation

Explanation

d: To increase impedance Explanation

Explanation

4. The output voltage at fcl = 12 mV. What is the output voltage at the midpoint frequency?

a: 12 mV Explanation

Explanation

b: 8.48 mV Explanation

Explanation

c: 10 mV Explanation

Explanation

d: 16.97 mV Explanation

Explanation

5. A sinusoidal signal has 1.5v at t=2S, if this signal is given to common source amplifier with Av=5 v what will be its output at t=2S?

a: 7.5 Explanation

Explanation

b: -7.5 Explanation

Explanation

c: 15 Explanation

Explanation

d: 0 Explanation

Explanation

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