FET Input Stages Quiz

What is the purpose of biasing in FET input stages?

• To minimize the operating point and ensure improper amplification of the input signal

• To increase the distortion of the input signal

• To reduce the amplification of the input signal

• To establish the operating point and ensure proper amplification of the input signal.

How does the gate-source voltage affect the biasing of FET input stages?

• It controls the flow of current through the FET.

• It increases the resistance of the FET

• It has no effect on the biasing of FET input stages

• It decreases the input impedance of the FET

What is small signal analysis in the context of FET input stages?

• Analyzing the behavior of the circuit using small variations in input signals

• Using large variations in input signals

• Ignoring the input signals

• Measuring the maximum input signal

Explain the concept of transconductance in small signal analysis of FET input stages.

• Ratio of change in output current to change in input voltage

• Ratio of change in input voltage to change in output current

• Measurement of resistance in the FET input stage

• Ratio of change in input current to change in output voltage

What is the difference between AC and DC analysis of FET input stages?

• The AC analysis focuses on the small-signal behavior of the FET input stage, while the DC analysis focuses on the biasing and operating point of the FET input stage.

• The AC analysis focuses on the large-signal behavior of the FET input stage, while the DC analysis focuses on the small-signal behavior of the FET input stage.

• The AC analysis focuses on the large-signal behavior of the FET input stage, while the DC analysis focuses on the biasing and operating point of the FET input stage.

• The AC analysis focuses on the biasing and operating point of the FET input stage, while the DC analysis focuses on the small-signal behavior of the FET input stage.

How does the input capacitance affect the AC analysis of FET input stages?

• It decreases the input impedance of the amplifier

• It introduces a pole in the frequency response, limiting the bandwidth of the amplifier.

• It has no effect on the AC analysis

• It increases the gain of the amplifier

How does the input capacitance impact the frequency response of FET input stages?

• It introduces a pole in the transfer function, limiting the bandwidth of the circuit.

• It decreases the input impedance of the circuit

• It has no impact on the frequency response

• It increases the bandwidth of the circuit