Related Mcqs:

1. 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

2. The gain of an amplifier without feedback is 100 db. If a negative feedback of 3 db is applied, the gain of the amplifier will become______________?

   A. 5 db
   B. 300 db
   C. 103 db
   D. 97 db

3. 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

4. If voltage feedback (negative) is applied to an amplifier, its output impedance ______________?

   A. Remains the same
   B. Is increased
   C. Is decreased
   D. None of the above

5. 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

6. 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

7. 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

8. 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

9. The gain of an amplifier with feedback is known as____________gain?

   A. Resonant
   B. Open loop
   C. Closed loop
   D. None of the above

10. 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