GATE Analog Circuits: Op-amp Circuits – Previous Year Questions
30 GATE previous year questions on Op-amp Circuits (Analog Circuits, Electronics and Communication Engineering) with answers and explanations, from every paper.
- GATE 2017 EC Q22 – For the operational amplifier circuit shown, the output saturation voltages are 15 V. The upper and lower threshold voltages for the circuit are,…
- GATE 2017 EC Q52 – The amplifier circuit shown in the figure is implemented using a compensated operational amplifier (op-amp), and has an open-loop voltage gain, A 0 =…
- GATE 2015 EC Q50 – In the circuit shown, assume that the opamp is ideal. The bridge output voltage V 0 (in mV) for = 0.05 is .
- GATE 2015 EC Q51 – The circuit shown in the figure has an ideal opamp. The oscillation frequency and the condition to sustain the oscillations, respectively, are
- GATE 2016 EC Q23 – Consider the constant current source shown in the figure below. Let represent the current gain of the transistor. [Figure: A reference voltage V ref…
- GATE 2016 EC Q24 – The following signal V i of peak voltage 8 V is applied to the non-inverting terminal of an ideal opamp. The transistor has V BE = 0.7 V, = 100; V LED…
- GATE 2016 EC Q25 – Consider the oscillator circuit shown in the figure. The function of the network (shown in dotted lines) consisting of the 100 kΩ resistor in series…
- GATE 2016 EC Q50 – An ideal opamp has voltage sources V 1, V 3, V 5, , V N-1 connected to the non-inverting input and V 2, V 4, V 6, , V N connected to the inverting…
- GATE 2016 EC Q51 – A p-i-n photodiode of responsivity 0.8 A/W is connected to the inverting input of an ideal opamp as shown in the figure, V CC = 15 V, -V CC = -15 V,…
- GATE 2018 EC Q12 – In the circuit shown below, the op-amp is ideal and the Zener voltage of the diode is 2.5 volts. At the input, unit step voltage is applied, i.e. v…
- GATE 2018 EC Q13 – A good transimpedance amplifier has
- GATE 2018 EC Q48 – An op-amp based circuit is implemented as shown below. In the above circuit, assume the op-amp to be ideal. The voltage (in volts, correct to one…
- GATE 2020 EC Q18 – The components in the circuit shown below are ideal. If the op-amp is in positive feedback and the input voltage V i is a sine wave of amplitude 1 V,…
- GATE 2020 EC Q28 – In the circuit shown below, all the components are ideal. If V i is +2 V, the current I o sourced by the op-amp is mA.
- GATE 2020 EC Q51 – The components in the circuit given below are ideal. If R=2\ k and C=1\ F, the -3 dB cut-off frequency of the circuit in Hz is
- GATE 2021 EC Q19 – For the circuit with an ideal OPAMP shown in the figure, V REF is fixed. If V OUT=1 volt for V IN=0.1 volt and V OUT=6 volt for V IN=1 volt, where V…
- GATE 2021 EC Q20 – Consider the circuit with an ideal OPAMP shown in the figure. Assuming V IN V CC and V REF V CC , the condition at which V OUT equals to zero is
- GATE 2021 EC Q55 – A circuit with an ideal OPAMP is shown in the figure. A pulse V IN of 20 ms duration is applied to the input. The capacitors are initially uncharged.…
- GATE 2022 EC Q26 – 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…
- GATE 2022 EC Q41 – For the following circuit with an ideal OPAMP, the difference between the maximum and the minimum values of the capacitor voltage (V C) is .
- GATE 2022 EC Q42 – A circuit with an ideal OPAMP is shown. The Bode plot for the magnitude (in dB) of the gain transfer function (A V(j)=V out(j)/V in(j)) of the circuit…
- GATE 2022 EC Q58 – Consider the circuit shown with an ideal OPAMP. The output voltage V 0 is V (rounded off to two decimal places).
- GATE 2023 EC Q39 – The V OUTV IN of the circuit shown below is
- GATE 2024 EC Q49 – The opamps in the circuit shown are ideal, but have saturation voltages of 10 V. Assume that the initial inductor current is 0 A. The input voltage (V…
- GATE 2024 EC Q50 – 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…
- GATE 2025 EC Q29 – Which of the following statements is/are TRUE with respect to an ideal opamp?
- GATE 2025 EC Q34 – All the components in the bandpass filter given below are ideal. The lower -3 dB frequency of the filter is 1 MHz. The upper -3 dB frequency (in MHz,…
- GATE 2026 EC Q17 – The ideal OP-AMP circuit shown in the Figure produces output voltage V o = x when the Switch, S, is open. Which of the options represents the output…
- GATE 2026 EC Q53 – A circuit using an ideal OP-AMP is shown in the Figure. Which of the following options gives the correct value of the current I X?
- GATE 2026 EC Q62 – Consider an ideal OP-AMP circuit as shown in the Figure. The resistances R 1=R 2=R 3=R 4=50 kΩ. The magnitude of the closed loop gain is . (rounded…