# Op Amp MCQ – Operational Amplifier [Questions and Answer]

Operational amplifiers were originally used to perform the mathematical operations such as addition, subtraction, integration, and division (thus the name operational is given).

Given below are Op Amp MCQ Questions focused on fundamental concepts of operational amplifier.

Electrical Engineering MCQ

## Voltage Gain and BW of Ideal Op Amp MCQ

The ideal op-amp has ____________* *voltage gain and _________ bandwidth:

- Zero, Infinite
- Infinite, Zero
- Zero, Zero
- Infinite, Infinite

Correct answer: 4. Infinite, Infinite

## The output impedance of ideal op-amp is

The output impedance of ideal op-amp is:

- Zero
- Low
- High
- Infinite

Correct answer: 1. Zero

## The zero-level comparator is an application of

The zero-level comparator is an application of:

- Integrator
- Differentiator
- Comparator
- SCR

Correct answer: 3. Comparator

## The summing amplifier is an application of

The summing amplifier is an application of:

- Noninverting op-amp
- Inverting op-amp
- Integrator
- Differentiator

Correct answer: 2. Inverting op-amp

## In op-amp differentiator the capacitor is

In op-amp differentiator the capacitor is:

- Feedback element
- Input element
- Both of these
- None of these

Correct answer: 2. Input element