GATE ECE topic:op-amp-circuits PYQs & Answers

Home
GATE
Electronics and Communication Engineering
Topics
topic:op-amp-circuits

Attempt a question, record the concept and assumptions, then check the available answer. Rework mistakes after revising the relevant concepts. Topic tags can overlap; review the question context.

Questions 1–10 of 24. Imported answers require independent review unless marked reviewed.

Topic practice 24 questionsPage 1 of 3

The ideal OP-AMP circuit shown in the Figure produces output voltage

when the Switch, S, is open.

Which of the options represents the output voltage when S is closed?

Diagram for Electronics and Communication Engineering question 17

Your answerChoose one option.

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

A circuit using an ideal OP-AMP is shown in the Figure.

Diagram for Electronics and Communication Engineering question 53

Which of the following options gives the correct value of the current

Your answerChoose one option.

2.0 mA

1.5 mA

3.0 mA

0 mA

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

Consider an ideal OP-AMP circuit as shown in the Figure. The resistances

. The magnitude of the closed loop gain is ___. (rounded off to two decimal places)

Diagram for Electronics and Communication Engineering question 62

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

Which of the following statements is/are TRUE with respect to an ideal opamp?

Your answerSelect all correct options. You can choose more than one.

It has an infinite input resistance

It has an infinite output resistance

It has an infinite open-loop differential gain

It has an infinite open-loop common-mode gain

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

All the components in the bandpass filter given below are ideal. The lower

frequency of the filter is 1 MHz.

The upper

frequency (in MHz, rounded off to the nearest integer) is ________.

Diagram for Electronics and Communication Engineering question 34

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

The opamps in the circuit shown are ideal, but have saturation voltages of ±10 V.

Diagram for Electronics and Communication Engineering question 49

Assume that the initial inductor current is 0 A. The input voltage (

) is a triangular signal with peak voltages of ±2 V and time period of 8 μs. Which one of the following statements is true?

Your answerChoose one option.

is delayed by 2 μs relative to

, and

is a triangular waveform.

is not delayed relative to

, and

is a trapezoidal waveform.

is not delayed relative to

, and

is a triangular waveform.

is delayed by 1 μs relative to

, and

is a trapezoidal waveform.

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

In the circuit below, the opamp is ideal.

Diagram for Electronics and Communication Engineering question 50

[Circuit diagram: an ideal op-amp relaxation oscillator with resistors R, R₁ and R, capacitors C and C, and ground connections.] If the circuit is to show sustained oscillations, the respective values of

and the corresponding frequency of oscillation are ______.

Your answerChoose one option.

and

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

The

of the circuit shown below is

Diagram for Electronics and Communication Engineering question 39

Your answerChoose one option.

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

An ideal OPAMP circuit with a sinusoidal input is shown in the figure. The 3 dB frequency is the frequency at which the magnitude of the voltage gain decreases by 3 dB from the maximum value. Which of the options is/are correct?

Diagram for Electronics and Communication Engineering question 26

Your answerSelect all correct options. You can choose more than one.

The circuit is a low pass filter.

The circuit is a high pass filter.

The 3 dB frequency is 1000 rad/s.

The 3 dB frequency is

rad/s.

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

For the following circuit with an ideal OPAMP, the difference between the maximum and the minimum values of the capacitor voltage (

) is ________.

Diagram for Electronics and Communication Engineering question 41

Your answerChoose one option.

15 V

27 V

13 V

14 V

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

GATE ECE topic:op-amp-circuits PYQs

How to practice topic:op-amp-circuits

Question 17

Question 53

Question 62

Question 29

Question 34

Question 49

Question 50

Question 39

Question 26

Question 41