GATE EE

Feedback Amplifiers and Oscillator Circuits

Analog Electronics

(Past Years Questions)

Marks 1

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In the Wien Bridge oscillator circuit shown in figure, the bridge is balanced when ...
GATE EE 2014 Set 1
In the feedback network shown below, if the feedback factor $$k$$ is increased, then the ...
GATE EE 2013
As shown in the figure, a negative feedback system has an amplifier of gain $$100$$ with $$ \pm 10\% $$ tolerance in the...
GATE EE 2010
An op-amp has an open-loop gain of $${10^5}$$ and an open-loop upper cutoff frequency of $$10$$ $$Hz.$$ If this op-amp i...
GATE EE 2001
A practical $$R$$-$$C$$ sinusoidal oscillator is built using a positive feedback amplifier with a closed loop gain sligh...
GATE EE 1994
Given figure shows a two stage small signal transistor feedback amplifier. Match the defective component (listed on the ...
GATE EE 1994
A Wein bridge oscillator is shown in figure. Which of the following statements are true if $$'f'$$ is the frequency of o...
GATE EE 1993
In a common Emitter amplifier, the un bypassed emitter resistance provides
GATE EE 1992
The voltage series feedback in a feedback amplifier leads to
GATE EE 1992

Marks 2

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An oscillator circuit using ideal op-amp and diodes is shown in the figure. The duration for $$+ve$$ part of the cyc...
GATE EE 2014 Set 2
The circuit shown is a ...
GATE EE 2012

Marks 5

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Determine the transfer function $$\left( {{{{V_y}} \over {{V_x}}}} \right)$$ for the $$RC$$ network shown in figure $$(1...
GATE EE 2002
Show that the circuit given in fig. will work as an oscillator at $$f = {1 \over {2\pi RC}},$$ if $${R_1} = 2{R_2}$$ ...
GATE EE 1998
Determine the frequency of Oscillation of the circuit shown in figure, Assume the OP-amp to be ideal ...
GATE EE 1997

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