GATE ECE 2024 | Operational Amplifier Question 1 | Analog Circuits

GATE ECE 2024

MCQ (Single Correct Answer)

-1.33

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

GATE ECE 2024 Analog Circuits - Operational Amplifier Question 2 English

Assume that the initial inductor current is 0 A. The input voltage (Vi) is a triangular signal with peak voltages of ±2 V and time period of 8 μs. Which one of the following statements is true?

V₀₁ is delayed by 2 μs relative to V_i, and V₀₂ is a triangular waveform.

V₀₁ is not delayed relative to V_i, and V₀₂ is a trapezoidal waveform.

V₀₁ is not delayed relative to Vi, and V₀₂ is a triangular waveform.

V₀₁ is delayed by 1 μs relative to V_i, and V₀₂ is a trapezoidal waveform.

GATE ECE 2024

MCQ (Single Correct Answer)

-1.33

In the circuit below, the opamp is ideal.

GATE ECE 2024 Analog Circuits - Operational Amplifier Question 1 English

If the circuit is to show sustained oscillations, the respective values of $R_1$ and the corresponding frequency of oscillation are ____.

$29R$ and $1/(2\pi \sqrt{6}RC)$

$2R$ and $1/(2\pi RC)$

$29R$ and $1/(2\pi RC)$

$2R$ and $1/(2\pi \sqrt{6}RC)$

GATE ECE 2023

MCQ (Single Correct Answer)

-0.67

The $$\mathrm{{{{V_{OUT}}} \over {{V_{IN}}}}}$$ of the circuit shown below is

GATE ECE 2023 Analog Circuits - Operational Amplifier Question 4 English

$$ - {{{R_4}} \over {{R_3}}}$$

$${{{R_4}} \over {{R_3}}}$$

$$1 + {{{R_4}} \over {{R_3}}}$$

$$1 - {{{R_4}} \over {{R_3}}}$$

GATE ECE 2023

Numerical

-0.67

A sample and hold circuit is implemented using a resistive switch and a capacitor with a time constant of 1 $$\mu$$s. The time for the sampling switch to stay closed to charge a capacitor adequately to a full scale voltage of 1 V with 12-bit accuracy is ___________ $$\mu$$s (rounded off to two decimal places).

Your input ____