1
GATE ECE 2008
MCQ (Single Correct Answer)
+2
-0.6
Consider the following circuit using an ideal Op-Amp. The I-V characteristics of the diode is described by the relation
$$$I = {I_0}\left[ {{e^{{V \over {VT}}}} - 1} \right], where \,{V_T}\,\, = \,\,25mV,{I_0}\,\, = 1 \mu {\rm A}$$$
and V is the voltage across the diode (taken as positive for forward bias). For an input voltage $${V_i}\,\, = \,\, - 1V,$$ the output voltage V0 is
![GATE ECE 2008 Analog Circuits - Operational Amplifier Question 36 English](https://gateclass.cdn.examgoal.net/examside/questions/93ac15a1936fc44dcd06ff9220d44192901d5140cbb7bbeae53871a5d43418b2.jpg)
2
GATE ECE 2008
MCQ (Single Correct Answer)
+2
-0.6
The Op-Amp circuit shown above represents a
![GATE ECE 2008 Analog Circuits - Operational Amplifier Question 35 English](https://gateclass.cdn.examgoal.net/examside/questions/66cd18edbeb4664c489f92d54d65cff4939605d3f351644b4d6ed54dffa80f50.jpg)
3
GATE ECE 2008
MCQ (Single Correct Answer)
+2
-0.6
Consider the Schmitt trigger circuit shown below.
![GATE ECE 2008 Analog Circuits - Operational Amplifier Question 34 English](https://gateclass.cdn.examgoal.net/examside/questions/44562da593db47d227c2c5744cb7b404dd738b99e96a47685e0d125a4643251f.jpg)
A triangular wave which goes from -12V to 12V is applied to the inverting input of the OP-AMP. Assume that the output of the OP-AMP swings from +15V to -15V. The voltage at the non-inverting input switches between.
4
GATE ECE 2008
MCQ (Single Correct Answer)
+1
-0.3
Consider the amplitude modulated (AM) signal $$A_c\cos\omega_ct\;+\;2\cos\omega_mt\;\cos\omega_ct$$. For
demodulating the signal using envelope detector, the minimum value of Ac should
be
Paper analysis
Total Questions
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9
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11
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6
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6
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8
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11
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1
Network Theory
9
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9
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