1
GATE EE 1999
Subjective
+5
-0
The input voltage $${V_i}$$ in the circuit is a $$1$$ $$kHz$$ sine wave of $$1$$ $$V$$ amplitude. Assume ideal operational amplifiers with $$ \pm 15V\,\,DC$$ supply. Sketch on a single diagram the wave-forms of $${V_i},$$ $${V_1}$$ and $${V_0}$$ show, indicating the peak value of$${V_1}$$ and the average value $${V_0}$$.
![GATE EE 1999 Analog Electronics - Operational Amplifier Question 14 English](https://gateclass.static.cdn.examgoal.net/asSI2Mh3wdXUlkaUr/vQBgRyHvu4aFrnZCwoxD1dObOAlKc/ahtHI17Nbsw5Ek7PUcLgj5/uploadfile.jpg)
2
GATE EE 1998
Subjective
+5
-0
In the circuit of figure $${R_s} = 2\,k\Omega ,$$ $${R_L} = 5\,k\Omega $$ For the op-amp $$A = {10^5},$$
$${R_i} = 100\,k\Omega ,\,\,{R_0} = 50\,k\Omega .$$ For $${V_0} = 10V.$$
Calculate $${V_S}$$ and $${{{V_0}} \over {{V_S}}}$$ and estimate the input resistance of the circuit,
$${R_i} = 100\,k\Omega ,\,\,{R_0} = 50\,k\Omega .$$ For $${V_0} = 10V.$$
Calculate $${V_S}$$ and $${{{V_0}} \over {{V_S}}}$$ and estimate the input resistance of the circuit,
![GATE EE 1998 Analog Electronics - Operational Amplifier Question 15 English](https://imagex.cdn.examgoal.net/XVzWAulsxJFxoMYDL/mWFztfOVDMuBpKm2ZtnHx4VTrujdV/wrmqGltH2AxISvzxy6J5qB/uploadfile.jpg)
3
GATE EE 1994
Subjective
+5
-0
Figure below shows an op-amp amplifier. Find the output voltage in steady state condition where $$(i)$$ switch is open $$(ii)$$ $$S$$ is closed
![GATE EE 1994 Analog Electronics - Operational Amplifier Question 9 English](https://imagex.cdn.examgoal.net/FPSmziuSb18mzjgPh/Zl9PZzuZjv8VYxJyTQWjHPBp7Pk1R/FlbD6RV1CczLhZWLVs3Dwv/image.png)
4
GATE EE 1992
Subjective
+5
-0
$$(a)$$ For the circuit shown in figure
![GATE EE 1992 Analog Electronics - Operational Amplifier Question 10 English](https://imagex.cdn.examgoal.net/XYJiiAlws5go7hOp6/u6JEMcLlIaow7a8ShQw2KoR6GZmbj/lYgRGKwrtvd4HpfAhpSJPN/image.png)
$$(i)$$ Calculate the transfer function $${{{V_0}} \over {{V_i}}}$$
$$(ii)$$ plot the amplitude and phase response as a function for $$R = {R_1}$$
Questions Asked from Operational Amplifier (Marks 5)
Number in Brackets after Paper Indicates No. of Questions
GATE EE Subjects
Electromagnetic Fields
Signals and Systems
Engineering Mathematics
General Aptitude
Power Electronics
Power System Analysis
Analog Electronics
Control Systems
Digital Electronics
Electrical Machines
Electric Circuits