When current feedback (negative) is applied to an amplifier, its output impedance ?
A. Is increased
B. Is decreased
C. Remains the same
D. None of the above
A. Is increased
Amplifiers with Negative Feedback MCQs
Amplifiers with Negative Feedback MCQs. Multiple Choice Questions and Answers related to Amplifiers with Negative Feedback in Electrical and Electronics Engineering.
Negative feedback is employed in ?
A. Oscillators
B. Rectifiers
C. Amplifiers
D. None of the above
C. Amplifiers
A feedback circuit usually employs __________ network ?
A. Resistive
B. Capacitive
C. Inductive
D. None of the above
A. Resistive
When voltage 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
B. Is increased
When a negative voltage feedback is applied to an amplifier, its bandwidth ?
A. Is increased
B. Is decreased
C. Remains the same
D. Insufficient data
A. Is increased
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
A. Is decreased
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
B. 100
The gain of an amplifier with feedback is known as ____________ gain ?
A. Resonant
B. Open loop
C. Closed loop
D. None of the above
C. Closed loop
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
C. 01
Emitter follower is a ______ circuit ?
A. Voltage feedback
B. Current feedback
C. Both voltage and current feedback
D. None of the above
A. Voltage feedback