GATE Analog Electronics: Operational amplifiers and applications – Previous Year Questions
17 GATE previous year questions on Operational amplifiers and applications (Analog Electronics, Instrumentation Engineering) with answers and explanations, from every paper.
- GATE 2021 IN Q24 – The diode has fixed forward drop 0.6 V. The ideal OPAMP receives v s=0.4(100 t) as shown. At the positive peak of v s, OPAMP output v OA is V.
- GATE 2021 IN Q40 – The ideal OPAMP has output V o=5 V. The value of R L in the shown circuit is k.
- GATE 2021 IN Q57 – For the shown ideal OPAMP circuit, output Vo is V (one decimal place).
- GATE 2022 IN Q35 – An OPAMP with gain 104, input impedance 10 M, and output impedance 100 is used in a unity-gain feedback voltage buffer. Its closed-loop output…
- GATE 2022 IN Q56 – The circuit shown is driven by a sinusoidal input voltage, 𝑉, resulting in the output voltage, 𝑉௨௧. The frequency (in kilohertz) at which the…
- GATE 2022 IN Q64 – The switch is initially closed. It opens at t=0 and remains open. The time when comparator output V out becomes LOW is ms (three decimal places).
- GATE 2023 IN Q26 – The opamp shown is ideal except for input bias current 1 nA and input offset voltage 10 μV. The worst-case output voltage is ± μV (nearest integer).
- GATE 2023 IN Q59 – The opamps shown are ideal. Inputs are V S1=3+0.10(300t) V and V S2=-2+0.11(300t) V. The mean output V 0 is V (two decimal places).
- GATE 2023 IN Q60 – The ideal switched-opamp circuit has V in=100 mV. At t=0, the 10 nF capacitor stores 1 nC with the shown polarity. A 1 kHz square wave V s controls…
- GATE 2023 IN Q62 – In the circuit shown, assuming an ideal opamp, the value of the output voltage Vo = V (rounded off to one decimal place).
- GATE 2024 IN Q41 – The opamps A 1,A 2 shown are ideal, except that A 1 has offset voltage V OS=1 mV. For V in=0 V, the output voltages V out1,V out2, respectively, are
- GATE 2024 IN Q43 – In the circuit shown, R = 1 kΩ and C = 0.1 μF. For a DC gain of −10, the 3 dB cutoff frequency (one decimal place) is as follows. Assume the opamp is…
- GATE 2024 IN Q59 – In the circuit shown, assume the opamp is ideal and the initial charge on the capacitor is zero. The output voltage at time t = 2 ms is V (rounded off…
- GATE 2025 IN Q20 – For the ideal-opamp circuit shown, the ratio V/I is
- GATE 2025 IN Q31 – The circuits mentioned in the following options are realized using ideal opamp. Among these, the circuit(s) performing non-linear operation on the…
- GATE 2026 IN Q45 – In the circuit shown below, R=1\ k and R f=10\ k. If V in=100\ mV and the op-amps have supply voltages of 15\ V, then V out is V.
- GATE 2026 IN Q46 – In the following active-filter circuit with ideal op-amps, R=1\ k and C=1\ F. The input V in has an amplitude of 1 V at 1000 rad/s. The amplitude of V…