D:-Band stop filter
Correct Answer:- Option-B
Question29:-Which filters are used to block the 50 Hz hum produced by AC mains in Amplifiers?
A:-Low Pass
B:-High Pass
C:-Band Pass
D:-Band Stop
Correct Answer:- Option-D
Question30:-Voltage follower circuits are used for
A:-Current amplification
B:-Voltage amplification
C:-To avoid loading effect of source
D:-All the above
Correct Answer:- Option-C
Question31:-Which of the following is difficult to fabricate in an IC?
A:-Diode
B:-Resistor
C:-Transistor
D:-Choke
Correct Answer:- Option-D
Question32:-The output impedance of an Op-Amp is about
A:-1 MQ
8:-10೧
C:-500 Q
0:-50 0
Correct Answer:- Option-D
Question33:-In Class B amplifier the Q point is Set Slightly above cut off. The purpose is to
A:-Avoid Cross over distortion
B:-Increase efficiency
C:-Reduce power dissipation
D:-Increase gain
Correct Answer:- Option-A
Question34:-Velocity of sound in water/liquid compared to that of air is
A:-Less
B:-Either Less or More
C:-The Same
D:-More
Correct Answer:- Option-D
Question35:-Specific Gravity of a fully charged Lead-Acid cell at room temperature will be
൧:-1.15
8:-1.38
C:-1.835
D:-1.28
Correct Answer:- Option-D
Question36:-For IC 7815 the minimum unregulated DC input voltage should be
‏۷+-:ھ‎
‎B:-+17V
‎C:-+19 V
D:-+13 V
Correct Answer:- Option-B
Question37:-Two identical transistors having a B of 50 each, are connected as Darlington pair, the current gain B of the
amplifier is
A:-100
8:-1
C:-2500
D:-500
Correct Answer:- Option-C
Question38:-Effect of the emitter by pass capacitor in a CE Amplifier is
A:-Gain