Emitter follower is used for ________________?

Related Mcqs:

1. The output impedance of an emitter follower is______________?

   A. High
   B. Very high
   C. Almost zero
   D. Low

2. The voltage gain of an emitter follower is _____________?

   A. Much less than 1
   B. Approximately equal to 1
   C. Greater than 1
   D. None of the above

3. An emitter follower has ______________input impedance?

   A. Zero
   B. Low
   C. High
   D. None of the above

4. Emitter follower is a _______________circuit?

   A. Voltage feedback
   B. Current feedback
   C. Both voltage and current feedback
   D. None of the above

5. Emitter follower is used for________________?

   A. Current gain
   B. Impedance matching
   C. Voltage gain
   D. None of the above

6. 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

7. 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

8. 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

9. 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

10. 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