1
GATE ECE 2013
MCQ (Single Correct Answer)
+1
-0.3
In a voltage-voltage feedback as shown below, which one of the following statements is TRUE, if the gain k is increased? GATE ECE 2013 Analog Circuits - Feedback Amplifier Question 15 English
A
The input impedance increases and output impedance decreases.
B
The input impedance increases and output impedance also increases.
C
The input impedance increases and output impedance also increases.
D
The input impedance increases and output impedance increases.
2
GATE ECE 1998
MCQ (Single Correct Answer)
+1
-0.3
In a shunt-shunt negative feedback Amplifier, as compared to the basic Amplifier,
A
both input and output impedance decreases .
B
input impedance decreases but output impedance increases.
C
input impedance increases but output impedance decreases
D
both input and output impedance decreases
3
GATE ECE 1995
MCQ (Single Correct Answer)
+1
-0.3
To obtain very high input and output impedances in a feedback Amplifier, the mostly used is
A
Voltage - series
B
Current - series
C
Voltage - shunt
D
Current - shunt
4
GATE ECE 1993
MCQ (More than One Correct Answer)
+1
-0.3
Negative feedback in Amplifiers.
A
improves the signal to noise ratio at the i/p.
B
improves the signal to noise ratio at the o/p.
C
does not effect the signal to noise ratio at the o/p.
D
Reduces distortion
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