GATE EC Op-amp Circuits questions

The voltage $e_{0}$ indicated in the figure has been measured by an ideal voltmeter. Which of the following can be calculated?

The $\text{OP-amp}$ circuit shown in the figure is a filter. The type of filter and its cut-off frequency are respectively

An ideal $\text{op-amp}$ is an ideal

Voltage series feedback (also called series-shunt feedback) results in

In the $\text{op-amp}$ circuit given in the figure, the load current $i_{\text{L}}$ is

If the input to the ideal comparator shown in the figure is a sinusoidal signal of $8 \mathrm{~V}$ (peak to peak) without any DC component, then the output of the comparator has a duty cycle of

The oscillator circuit shown in the figure is has an ideal inverting amplifier. Its frequency of oscillation (in $\mathrm{Hz}$ ) is

If the $\text{op-amp}$ in the figure is idea, the output voltage Voult will be equal to

The circuit shown in the figure is a $4$ bit $\text{DAC}$ The input bits $0$ and $1$ are represented by $0$ and $5 \mathrm{~V}$ respectively. The $\text{OP AMP}$ is ideal, but all the resistances and the $5 \mathrm{~V}$ inputs have a tolerance of $\pm 10 \%$. The specification (rounded to the nearest multiple of $5 \%$ ) for the tolerance …

A $741$-type opamp has a gain-bandwidth product of $1 \; \mathrm{MHz}$. A non-inverting amplifier using this opamp and having a voltage gain of $20 \mathrm{~dB}$ will exhibit a $-3-\mathrm{dB}$ bandwidth of

The circuit in figure employs positive feedback and is intended to generate sinusoidal oscillation. If at a frequency $f_{0}, \mathrm{~B}(f)=\Delta \frac{V_{f}(f)}{V_{0}(f)}=\frac{1}{6} \angle 0^{\circ}$, then to sustain oscillation at this frequency

An amplifier using an opamp with a slew-rate $S R=1$ $V / \mu \mathrm{sec}$ has a gain of $40 \mathrm{~dB}$. If this amplifier has to faithfully amplify sinusoidal signals from dc to $20 \; \mathrm{kHz}$ without introducing any slew-rate induced distortion, then the input signal level must not exceed.

The ideal $\text{OP-AMP}$ has the following characteristics.

In the figure, assume the OP-AMPs to be ideal. The output $v_{0}$ of the circuit is

The inverting OP-AMP shown in the figure has an open-loop gain of $100.$ The closed-loop gain $\frac{v_{0}}{v_{s}}$ is

The circuit of the figure represents a

The most commonly used amplifier in sample and hold circuits is

Assume that the $\text{on-amp}$ of the figure is ideal. If $\text{vi}$ is a triangular wave, then $\text{vo}$ will be

The configuration of given figure is a

If the $\text{op-amp}$ in figure is ideal, then $v_{0}$ is