1
GATE ECE 1999
MCQ (Single Correct Answer)
+1
-0.3
The first dominant pole encountered in the frequency response of a compensated op-amp is approximately at
A
5 Hz
B
10 KHz
C
1 MHz
D
100 MHz
2
GATE ECE 1999
MCQ (Single Correct Answer)
+2
-0.6
An amplifier has an open loop gain of 100, an input impedance of 1 k$$_\Omega $$, and an output impedance of 100 $$_\Omega $$ . A feedback network with a feedback factor of 0.99 is connected to the amplifier an a voltage series feedback mode. The new input and output impedance respectively are
A
$$10\,\Omega \,and\,1\,\Omega $$
B
$$10\,\Omega \,and\,10\,\Omega $$
C
$$100 k\,\Omega \,and\,1\,\Omega $$
D
$$100 k\,\Omega \,and\,1 \,\Omega $$
3
GATE ECE 1999
MCQ (Single Correct Answer)
+2
-0.6
Negative feedback in an amplifier
A
Reduces gain
B
Increase frequency and phase distortions
C
Reduces bandth
D
Increase Noise
4
GATE ECE 1999
MCQ (Single Correct Answer)
+1
-0.3
Crossover distortion behavior is characteristic of
A
class A output stage
B
class B output stage
C
class AB output stage
D
common- base output stage
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