Negative feedback is employed in __________________?
A. Oscillators
B. Rectifiers
C. Amplifiers
D. None of the above
Amplifiers with Negative Feedback
A feedback circuit usually employs _________________ network?
A feedback circuit usually employs _________________ network?
A. Resistive
B. Capacitive
C. Inductive
D. None of the above
When current feedback (negative) is applied to an amplifier, its input impedance _____________?
When current feedback (negative) is applied to an amplifier, its input impedance _____________?
A. Is decreased
B. Is increased
C. Remains the same
D. None of the above
If the feedback fraction of an amplifier is 0.01, then voltage gain with negative feedback is approximately________________?
If the feedback fraction of an amplifier is 0.01, then voltage gain with negative feedback is approximately________________?
A. 500
B. 100
C. 1000
D. 5000
The gain of an amplifier with feedback is known as____________gain?
The gain of an amplifier with feedback is known as____________gain?
A. Resonant
B. Open loop
C. Closed loop
D. None of the above
If the output of an amplifier is 10 V and 100 mV from the output is fed back to the input, then feedback fraction is_____________?
If the output of an amplifier is 10 V and 100 mV from the output is fed back to the input, then feedback fraction is_____________?
A. 10
B. 1
C. 01
D. 15
The value of negative feedback fraction is always _______________?
The value of negative feedback fraction is always _______________?
A. Less than 1
B. More than 1
C. Equal to 1
D. None of the above
When negative voltage feedback is applied to an amplifier, its voltage gain ____________?
When negative voltage feedback is applied to an amplifier, its voltage gain ____________?
A. Is increased
B. Is reduced
C. Remains the same
D. None of the above
The output impedance of an emitter follower is______________?
The output impedance of an emitter follower is______________?
A. High
B. Very high
C. Almost zero
D. Low