Recent questions tagged operational-amplifier / GO Electrical

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1

GATE Electrical 2013 | Question: 39
In the circuit shown below the op-amps are ideal. Then $V_{out}$ in Volts is $4$ $6$ $8$ $10$

In the circuit shown below the op-amps are ideal. Then $V_{out}$ in Volts is$4$$6$$8$$10$

piyag476

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piyag476 asked Feb 11, 2017

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2

GATE Electrical 2013 | Question: 1
In the circuit shown below what is the output voltage $(V_{out})$ in $Volts$ if a silicon transistor $Q$ and an ideal op-amp are used? $-15$ $-0.7$ $0.7$ $15$

In the circuit shown below what is the output voltage $(V_{out})$ in $Volts$ if a silicon transistor $Q$ and an ideal op-amp are used?$-15$$-0.7$$0.7$$15$

piyag476

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piyag476 asked Feb 11, 2017

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3

GATE Electrical 2014 Set 3 | Question: 50
The transfer characteristic of the Op-amp circuit shown in figure is

The transfer characteristic of the Op-amp circuit shown in figure is

makhdoom ghaya

9.4k points

makhdoom ghaya asked Feb 11, 2017

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4

GATE Electrical 2014 Set 3 | Question: 22
An operational-amplifier circuit is shown in the figure. The output of the circuit for a given input $v_i$ is $- \bigg (\dfrac{R_2}{R_1} \bigg)v_i \\$ $- \bigg (1+\dfrac{R_2}{R_1} \bigg )v_i \\$ $\bigg (1+\dfrac{R_2}{R_1} \bigg)v_i \\$ +$V_{\text{sat}} \text{ or } -V_{ \text{sat}}$

An operational-amplifier circuit is shown in the figure.The output of the circuit for a given input $v_i$ is$- \bigg (\dfrac{R_2}{R_1} \bigg)v_i \\$$- \bigg (1+\dfrac{R_2...

makhdoom ghaya

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makhdoom ghaya asked Feb 11, 2017

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5

GATE Electrical 2014 Set 2 | Question: 49
An oscillator circuit using ideal op-amp and diodes is shown in the figure. The time duration for $+ve$ part of the cycle is $\Delta t_1$ and for $–ve$ part is $\Delta t_2$ . The value of $e^{\frac{\Delta t_1-\Delta t_2}{RC}}$ will be _____________.

An oscillator circuit using ideal op-amp and diodes is shown in the figure.The time duration for $+ve$ part of the cycle is $\Delta t_1$ and for $–ve$ part is $\Delta t...

makhdoom ghaya

9.4k points

makhdoom ghaya asked Feb 11, 2017

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6

GATE Electrical 2014 Set 1 | Question: 51
In the figure shown, assume the op-amp to be ideal. Which of the alternatives gives the correct Bode plots for the transfer function $\dfrac{V_o(\omega )}{V_i(\omega )}?$

In the figure shown, assume the op-amp to be ideal. Which of the alternatives gives the correct Bode plots for the transfer function $\dfrac{V_o(\omega )}{V_i(\omega )}?$...

makhdoom ghaya

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makhdoom ghaya asked Feb 11, 2017

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7

GATE Electrical 2014 Set 1 | Question: 49
Given that the op-amps in the figure are ideal, the output voltage $V_0$ is $(V_1-V_2)$ $2(V_1-V_2)$ $(V_1-V_2)/2$ $(V_1+V_2)$

Given that the op-amps in the figure are ideal, the output voltage $V_0$ is$(V_1-V_2)$$2(V_1-V_2)$$(V_1-V_2)/2$$(V_1+V_2)$

makhdoom ghaya

9.4k points

makhdoom ghaya asked Feb 11, 2017

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8

GATE Electrical 2015 Set 2 | Question: 11
The operational amplifier shown in the figure is ideal. The input voltage (in Volt) is $V_{i} = 2 \sin(2\pi \times 2000t)$. The amplitude of the output voltage $V_{o}$ (in Volt) is ________.

The operational amplifier shown in the figure is ideal. The input voltage (in Volt) is $V_{i} = 2 \sin(2\pi \times 2000t)$. The amplitude of the output voltage $V_{o}$ (i...

makhdoom ghaya

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makhdoom ghaya asked Feb 11, 2017

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9

GATE Electrical 2015 Set 2 | Question: 14
The filters $F1$ and $F2$ having characteristics as shown in Figures $(a)$ and $(b)$ are connected as shown in Figure $(c)$. The cut-off frequencies of $F1$ and $F2$ are $f_{1}$ and $f_{2}$ respectively. If $f_{1} < f_{2}$, the resultant circuit exhibits the characteristic of a Band-pass filter Band-stop filter All pass filter High-Q filter

The filters $F1$ and $F2$ having characteristics as shown in Figures $(a)$ and $(b)$ are connected as shown in Figure $(c)$.The cut-off frequencies of $F1$ and $F2$ are $...

makhdoom ghaya

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makhdoom ghaya asked Feb 11, 2017

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10

GATE Electrical 2015 Set 1 | Question: 39
The op-amp shown in the figure has a finite gain $A = 1000$ and an infinite input resistance. A step-voltage $V_{i} = 1 \: mV$ is applied at the input at time $t = 0$ as shown. Assuming that the operational amplifier is not saturated, the time constant (in millisecond) of the output voltage $V_{o}$ is $1001$ $101$ $11$ $1$

The op-amp shown in the figure has a finite gain $A = 1000$ and an infinite input resistance. A step-voltage $V_{i} = 1 \: mV$ is applied at the input at time $t = 0$ as ...

makhdoom ghaya

9.4k points

makhdoom ghaya asked Feb 11, 2017

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11

GATE Electrical 2015 Set 1 | Question: 13
Consider the circuit shown in the figure. In this circuit $R=1 k\Omega$, and $C=1 \mu F$. The input voltage is sinusoidal with a frequency of $50$ Hz, represented as a phasor with magnitude $V_{i}$ and phase angle $0$ radian as shown in the figure. The output ... to the phase angle of the input voltage? $0 \\$ $\pi \\$ $\dfrac{\pi}{2} \\$ $-\dfrac{\pi}{2}$

Consider the circuit shown in the figure. In this circuit $R=1 k\Omega$, and $C=1 \mu F$. The input voltage is sinusoidal with a frequency of $50$ Hz, represented as a ph...

makhdoom ghaya

9.4k points

makhdoom ghaya asked Feb 11, 2017

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12

GATE Electrical 2016 Set 2 | Question: 27
For the circuit shown below, taking the opamp as ideal, the output voltage $V_{out}$ in terms of the input voltages $V_{1}, V_{2}$ and $V_{3}$ is $1.8V_{1} + 7.2V_{2} -V_{3}$ $2V_{1} + 8V_{2} - 9V_{3}$ $7.2V_{1} + 1.8V_{2} -V_{3}$ $8V_{1} + 2V_{2} - 9V_{3}$

For the circuit shown below, taking the opamp as ideal, the output voltage $V_{out}$ in terms of the input voltages $V_{1}, V_{2}$ and $V_{3}$ is$1.8V_{1} + 7.2V_{2} -V_{...

makhdoom ghaya

9.4k points

makhdoom ghaya asked Jan 29, 2017

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13

GATE Electrical 2016 Set 1 | Question: 37
A $2$-bit flash Analog to Digital Converter $(ADC)$ is given below. The input is $0 \leq V_{IN} \leq 3$ Volts. The expression for the $LSB$ of the output $B_{o}$ as a Boolean function of $X_{2}, X_{1}$, and $X_{0}$ ... $X_{0}\left[X_{2} \oplus X_{1}\right] \\$ $\overline{X_{0}}\left[X_{2} \oplus X_{1}\right]$

A $2$-bit flash Analog to Digital Converter $(ADC)$ is given below. The input is $0 \leq V_{IN} \leq 3$ Volts. The expression for the $LSB$ of the output $B_{o}$ as a Boo...

makhdoom ghaya

9.4k points

makhdoom ghaya asked Jan 29, 2017