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).

Op Amp MCQ

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

  1. Zero, Infinite
  2. Infinite, Zero
  3. Zero, Zero
  4. Infinite, Infinite

Correct answer: 4. Infinite, Infinite

The output impedance of ideal op-amp is:

  1. Zero
  2. Low
  3. High
  4. Infinite

Correct answer: 1. Zero

The zero-level comparator is an application of:

  1. Integrator
  2. Differentiator
  3. Comparator
  4. SCR

Correct answer: 3. Comparator

The summing amplifier is an application of:

  1. Noninverting op-amp
  2. Inverting op-amp
  3. Integrator
  4. Differentiator

Correct answer: 2. Inverting op-amp

In op-amp differentiator the capacitor is:

  1. Feedback element
  2. Input element
  3. Both of these
  4. None of these

Correct answer: 2. Input element

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