1
GATE ECE 2005
MCQ (Single Correct Answer)
+1
-0.3
The input resistance Ri of the amplifier shown in the figure is GATE ECE 2005 Analog Circuits - Operational Amplifier Question 71 English
A
30/4 K$$\Omega $$
B
10 K$$\Omega $$
C
40 K$$\Omega $$
D
infinite
2
GATE ECE 2005
MCQ (Single Correct Answer)
+1
-0.3
The effect of current shunt feedback in an amplifier is to
A
increase the input resistance and decrease the output resistance
B
increase both input and output resistances
C
decrease both input and output resistances
D
decrease the input resistances and increase the output resistance.
3
GATE ECE 2005
MCQ (Single Correct Answer)
+2
-0.6
In an ideal differential amplifier shown in the figure, a large value of (RE). GATE ECE 2005 Analog Circuits - Operational Amplifier Question 41 English
A
increases both the differential and common-mode gains.
B
increases the common-mode gain only.
C
decreases the differential-mode gain only.
D
decreases the common-mode gain only
4
GATE ECE 2005
MCQ (Single Correct Answer)
+2
-0.6
The voltage e0 indicated in the figure has been measured by an ideal voltmeter. Which of the following can be calculated? GATE ECE 2005 Analog Circuits - Operational Amplifier Question 40 English
A
Bias current of the inverting input only.
B
Bias current of the inverting and non-inverting inputs only.
C
Input offset current only.
D
Both the bias currents and the input offset current.
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