Advantages of Negative Feedback – Voltage Quiz

What is the main function of an inverting amplifier?

• To amplify the input signal without any phase change

• To produce an output that is in phase with the input signal

• To produce an output that is 90 degrees out of phase with the input signal

• To produce an output that is 180 degrees out of phase with the input signal

How does an inverting amplifier amplify the input signal?

• By adding noise to the input signal

• By reducing the amplitude of the input signal

• By delaying the input signal

• By inverting the phase of the input signal and then amplifying it using the gain of the operational amplifier.

What is the main function of a non-inverting amplifier?

• Block the input signal

• Amplify the input signal without inverting its phase

• Attenuate the input signal

• Amplify the input signal and invert its phase

How does a non-inverting amplifier amplify the input signal?

• Using a current divider network and a comparator to produce an output signal that is out of phase with the input signal.

• Using a voltage divider network and an operational amplifier to produce an output signal that is in-phase with the input signal.

• Through the use of a voltage regulator and a diode to produce an output signal that is out of phase with the input signal.

• By using a voltage multiplier network and a transistor to produce an output signal that is in-phase with the input signal.

What is the purpose of a differential amplifier?

• To amplify the common-mode signals

• To decrease the difference between two input signals

• To amplify the difference between two input signals while rejecting any common-mode signals.

• To reject both input signals

How does a differential amplifier amplify the input signals?

• By amplifying the difference between two input signals

• By amplifying the sum of two input signals

• By amplifying the highest of the two input signals

• By amplifying the average of two input signals

What is the role of an operational amplifier in a circuit?

• Reduce the current flow

• Amplify the voltage difference

• Increase the resistance

• Generate random signals

What is the main function of a comparator in a circuit?

• To regulate current flow

• To compare two voltage levels

• To generate random signals

• To amplify audio signals