Operational Amplifier Quiz

What is the primary function of an operational amplifier (op-amp)?

• Signal amplification

• Mathematical operations

• Voltage regulation

• Current limiting

What is the characteristic of an ideal op-amp regarding input impedance?

• Zero input impedance

• Finite input impedance

• Infinite input impedance

• Variable input impedance

In an op-amp, which terminal is referred to as the inverting input?

• The terminal with a positive sign

• The terminal with a negative sign

• The output terminal

• The feedback terminal

What does CMRR stand for in the context of operational amplifiers?

• Common Mode Rejection Ratio

• Common Mode Response Ratio

• Common Mode Resistance Ratio

• Common Mode Regulation Ratio

What is the output phase relationship when a signal is applied to the inverting terminal of an op-amp?

• In phase

• Out of phase by 90°

• Inverted by 360°

• Out of phase by 180°

What is the voltage gain of an op-amp in the non-inverting mode?

• 0

• 1 - (Rf/Ri)

• Rf/Ri

• 1 + (Rf/Ri)

In a voltage follower configuration, what is the voltage gain?

• Infinity

• 2

• 1

• 0

What is the output voltage of a subtractor circuit when V1 = 5V and V2 = 3V?

• 8V

• 3V

• 2V

• 5V

Which of the following is NOT a characteristic of an ideal op-amp?

• Infinite voltage gain

• Zero drift

• Finite output impedance

• Infinite bandwidth

What is the purpose of feedback in an op-amp circuit?

• To increase input impedance

• To reduce noise

• To stabilize the gain

• To amplify the output