1
GATE ECE 1999
MCQ (Single Correct Answer)
+2
-0.6
An amplifier is assumed to have a single pole high frequency transfer function. The rise time of its output response to a step function input is 35 nsec. The upper 3 dB frequency (in MHz) for the amplifier to a sinusoidal input is approximately at
A
4.55
B
10
C
20
D
28.6
2
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
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