Register

Recent questions and answers in Op-amp Circuits

0 0 votes
1 1 answer
213
213 views
GATE ECE 2026 | Question: 52
Consider an ideal OP-AMP circuit as shown in the Figure.The resistances $R_{1}=R_{2}=R_{3}=R_{4}=50 \mathrm{~k} \Omega$.The magnitude of the closed loop gain is $\_\_\_\_...
User Avatar
1 1 vote
1 1 answer
189
189 views
GATE ECE 2026 | Question: 43
A circuit using an ideal $\text{OP-AMP}$ is shown in the Figure.Which of the following options gives the correct value of the current $I_{X}$?$2.0$ mA$1.5$ mA$3.0$ mA$0$ ...
User Avatar
0 0 votes
1 1 answer
325
325 views
GATE ECE 2026 | Question: 7
The ideal $\text{OP-AMP}$ circuit shown in the Figure produces output voltage $V_{o}=x$ when the Switch, $\text{S}$, is open.Which of the options represents the output vo...
User Avatar
1 1 vote
2 2 answers
598
598 views
GATE ECE 2010 | Question: 10
Assuming the $\text{OP-AMP}$ to be ideal. the voltage gain of the amplifier shown below is$-\frac{\mathrm{R}_2}{\mathrm{R}_1}$$-\frac{\mathrm{R}_3}{\mathrm{R}_1}$$-\left(...
User Avatar
0 0 votes
1 1 answer
281
281 views
GATE ECE 1999 | Question 2.7
An amplifier has an open-loop gain of $100$, an input impedance of $1 \; \mathrm{k \Omega}$, and an output impedance of $100 \; \Omega$. A feedback network with a feedbac...
0 0 votes
0 0 answers
549
549 views
GATE ECE 2025 | Question: 19
Which of the following statements is/are TRUE with respect to an ideal opamp?It has an infinite input resistanceIt has an infinite output resistanceIt has an infinite ope...
User Avatar
0 0 votes
0 0 answers
965
965 views
GATE ECE 2024 | Question: 39
​​​​​The opamps in the circuit shown are ideal, but have saturation voltages of $\pm 10 \mathrm{~V}$.Assume that the initial inductor current is $0 \mathrm{~A}$. The inpu...
1 1 vote
0 0 answers
1.2k
1.2k views
GATE ECE 2024 | Question: 40
In the circuit below, the opamp is ideal. If the circuit is to show sustained oscillations, the respective values of $R_{1}$ and the corresponding frequency of oscillatio...
0 0 votes
0 0 answers
614
614 views
GATE ECE 2023 | Question: 29
The $\frac{V_{\text {OUT }}}{V_{\text {IN }}}$ of the circuit shown below is$-\frac{\mathrm{R}_4}{\mathrm{R}_3}$$\frac{\mathrm{R}_4}{\mathrm{R}_3}$$1+\frac{\text{R}_4}{\t...
1 1 vote
0 0 answers
482
482 views
TIFR ECE 2013 | Question: 8
The following circuit with an ideal operational amplifier isA low pass filterA high pass filterA bandpass filterA bandstop filterAn all pass amplifier
1 1 vote
0 0 answers
396
396 views
TIFR ECE 2017 | Question: 4
A Schmitt trigger circuit is a comparator circuit with a hysteresis. Consider the Schmitt trigger circuit in the figure implemented using an opamp. What are the trigger l...
1 1 vote
0 0 answers
270
270 views
TIFR ECE 2016 | Question: 5
Consider the opamp circuit in the figure. Approximately what is $V_{0}$?$-\left(\frac{V_{1}}{2}+V_{2}\right)$$-\left(\frac{V_{1}}{4}+\frac{V_{2}}{2}\right)$$-\left(V_{1}+...
0 0 votes
0 0 answers
422
422 views
GATE ECE 1997 | Question: 1.2
The voltage $\mathrm{V}$ in the figure is equal to$3 \mathrm{~V}$$-3 \mathrm{~V}$$5 \mathrm{~V}$None of these
0 0 votes
0 0 answers
386
386 views
GATE ECE 1997 | Question 1.3
The voltage $\mathrm{V}$ in the figure is always equal to$9 \mathrm{~V}$$5 \mathrm{~V}$$1 \mathrm{~V}$None of the above
0 0 votes
0 0 answers
399
399 views
GATE ECE 1997 | Question 4.1
The output voltage $V_{0}$ of the circuit shown in the figure is$-4 \mathrm{~V}$$6 \mathrm{~V}$$5 \mathrm{~V}$$-5.5 \mathrm{~V}$
0 0 votes
0 0 answers
318
318 views
GATE ECE 1997 | Question 5.6
Negative feedback in(1) Voltage series configurationincrease input impedance(2) Current shunt configurationdecrease input impedanceincreases closed loop gainleads to osci...
0 0 votes
0 0 answers
272
272 views
GATE ECE 1997 | Question 11
Consider the circuit given in the figure is using an ideal operational amplifier.The characteristics of the diode are given by the relation $\mathrm{I}=\mathrm{I}_{\mathr...
0 0 votes
0 0 answers
327
327 views
GATE ECE 1997 | Question 12
In the circuit shown in the figure is assume that the operational amplifier is ideal and that $\mathrm{V}_{\mathrm{o}}=0 \mathrm{~V}$ initially. The switch is connected f...
0 0 votes
0 0 answers
433
433 views
GATE ECE 1997 | Question 19
An $\text{IC}$ $555$ chip has been used to construct a pulse-Generator. Typical pin connections with components is shown below in the figure is for such an application. H...
0 0 votes
0 0 answers
425
425 views
GATE ECE 2000 | Question 1.5
In the given circuit, $V_{0}$ is$-1 \mathrm{~V}$$2 \mathrm{~V}$$+1 \mathrm{~V}$$+15 \mathrm{~V}$
0 0 votes
0 0 answers
387
387 views
GATE ECE 2000 | Question 1.9
If the $\text{op-amp}$ in figure is ideal, then $v_{0}$ iszero$\left(\mathrm{V}_{1}-\mathrm{V}_{2}\right) \sin \omega t$$-\left(V_{1}+V_{2}\right) \sin \omega t$$\left(\m...
0 0 votes
0 0 answers
619
619 views
GATE ECE 2000 | Question 1.10
The configuration of given figure is aprecision integratorHartley oscillatorButterworth high pass filterWien-bridge oscillator
0 0 votes
0 0 answers
359
359 views
GATE ECE 2000 | Question 1.11
Assume that the $\text{on-amp}$ of the figure is ideal. If $\text{vi}$ is a triangular wave, then $\text{vo}$ will besquare wavetriangular waveparabolic wavesine wave
0 0 votes
0 0 answers
351
351 views
GATE ECE 2000 | Question 1.17
The most commonly used amplifier in sample and hold circuits isa unity gain inverting amplifiera unity gain non-inverting amplifieran inverting amplifier with a gain of $...
0 0 votes
0 0 answers
525
525 views
GATE ECE 2000 | Question 1.25
The circuit of the figure represents alow pass filterhigh pass filterband pass filterband reject filter
0 0 votes
0 0 answers
438
438 views
GATE ECE 2000 | Question 2.3
For the circuit in the figure, the voltage $v_{0}$ is$2 \mathrm{~V}$$\text{1 V}$$-1 \mathrm{~V}$None of these
0 0 votes
0 0 answers
340
340 views
GATE ECE 2000 | Question 2.6
if the $\text{op-amp}$ in given figure, has an input offset voltage of $5 \; \mathrm{mV}$ and an open-loop voltage gain of $10,000,$ then $v_{0}$ will be$0 \mathrm{~V}$$5...
0 0 votes
0 0 answers
606
606 views
GATE ECE 2000 | Question 2.14
In given figure, the steady state output voltage corresponding to the input voltage $3+4 \sin 100 t \mathrm{~V}$ is$3+\frac{4}{\sqrt{2}} \sin \left(100 t-\frac{\pi}{4}\ri...
0 0 votes
0 0 answers
399
399 views
GATE ECE 1999 | Question 1.6
The first dominant pole encountered in the frequency response of a compensated $\text{op - amp}$ is approximately at$5 \; \mathrm{~Hz}$$10 \; \mathrm{kHz}$$1 \; \mathrm{M...
0 0 votes
0 0 answers
320
320 views
GATE ECE 1999 | Question 1.7
Negative feedback in an amplifierreduces gainincreases frequency and phase distortionsreduces bandwidthincreases noise
0 0 votes
0 0 answers
278
278 views
GATE ECE 1999 | Question 8
Neatly sketch and label the $\text{dc}$ transfer characteristic (i.e., $\mathrm{V}_{0} v s . \mathrm{V}_{i n}$ ) of the circuit shown in the given figure as $V_{\text {in...
Help get things started by asking a question.