1
GATE ECE 2015 Set 2
Numerical
+1
-0
In the circuit shown, VO = VOA for switch SW in position A and V0= VOB for SW in position B. Assume that the opamp is ideal.

The value of $${{{V_{OB}}} \over {{V_{OA}}}}$$ is _____

GATE ECE 2015 Set 2 Analog Circuits - Operational Amplifier Question 77 English
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2
GATE ECE 2015 Set 2
Numerical
+1
-0
In the bistable circuit shown, the ideal opamp has saturation levels of $$ \pm 5V.$$ The value of R1 (in k$$\Omega $$ ) that gives a hystersis width of 500 mV is ______ GATE ECE 2015 Set 2 Analog Circuits - Operational Amplifier Question 76 English
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3
GATE ECE 2014 Set 4
MCQ (Single Correct Answer)
+1
-0.3
The circuit shown represents GATE ECE 2014 Set 4 Analog Circuits - Operational Amplifier Question 78 English
A
a bandpass filter
B
a voltage controlled oscillator
C
an amplitude modulator
D
a monostable multivibrator
4
GATE ECE 2014 Set 2
MCQ (Single Correct Answer)
+1
-0.3
In the differential amplifier shown in the figure, the magnitudes of the common-mode and differential-mode gains are 𝐴cm and 𝐴d, respectively. If the resistance RE is increased, then GATE ECE 2014 Set 2 Analog Circuits - Operational Amplifier Question 79 English
A
𝐴cm increases.
B
common-mode rejection ratio increases.
C
𝐴d increases.
D
common-mode rejection ratio decreases.

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