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Operational Amplifier

Free 30+ Operational Amplifier MCQs for PPSC, FPSC, NTS, and Pakistan government job tests. Practise below with answers and explanations.

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Operational Amplifier — MCQs for Pakistan government job tests

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Operational Amplifier

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1.An operational amplifier's output voltage rises by 8 volts over a period of 12 microseconds. What is the slew rate of the op-amp?

2.What effect does negative feedback have on a circuit's input impedance and bandwidth?

3.In a differential amplifier, the differential voltage gain is calculated as RC divided by which of the following?

4.In a differential amplifier, the gain for common-mode signals is given by the value of RC divided by which of the following?

5.How does the common-mode voltage gain compare to the differential voltage gain?

6.The input impedance of a differential amplifier is given by r’e multiplied by which of the following?

7.What is the approximate voltage at the node located at the top of the tail resistor?

8.What types of signals can an operational amplifier amplify?

9.What is the closed-loop voltage gain of a non-inverting amplifier with an input resistor (Ri) of 1 kΩ and a feedback resistor (Rf) of 100 kΩ?

10.In an operational amplifier circuit with negative feedback, where is the output signal directed?

11.Which of the following is the most plausible value for the open-loop voltage gain of an operational amplifier?

12.Given that ADM equals 3500 and ACM is 0.35, what is the value of the CMRR?

13.What is the typical characteristic of common-mode gain in an amplifier?

14.What occurs in differential-mode operation?

15.How would you describe the differential gain in an amplifier?

16.In a single-ended operation of a differential amplifier, what is the typical input configuration?

17.What is the ideal output voltage of an operational amplifier when both its inputs are at zero volts?

18.What characterizes the common mode in a circuit?

19.Which of the following statements correctly describe a differential amplifier?

20.In a differential amplifier, the tail current is equal to which of the following?

How to prepare with Operational Amplifier MCQs

  • Work through questions topic by topic, then revisit any you answered incorrectly.
  • Read explanations carefully—they often cover facts that repeat across PPSC, FPSC, and NTS papers.
  • Pair subject practice with past papers to see how Operational Amplifier appears in real exam conditions.

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