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Amplifiers with Negative Feedback MCQs
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Amplifiers with Negative Feedback MCQs
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18 Questions

1. An emitter follower has ............ input impedance
2. When negative voltage feedback is applied to an amplifier, its voltage gain ...................
3. If the feedback fraction of an amplifier is 0.01, then voltage gain with negative feedback is approximately...........
4. The value of negative feedback fraction is always ................
5. When voltage feedback (negative) is applied to an amplifier, its input impedance .............
6. Emitter follower is a .................... circuit
7. When negative voltage feedback is applied to an amplifier, its voltage gain ...................
8. The voltage gain of an emitter follower is ...........
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 ..............
10. If voltage feedback (negative) is applied to an amplifier, its output impedance ..............
11. The output impedance of an emitter follower is ..........
12. When current feedback (negative) is applied to an amplifier, its output impedance ........
13. If the feedback fraction of an amplifier is 0.01, then voltage gain with negative feedback is approximately...........
14. An emitter follower has ............ input impedance
15. Negative feedback is employed in .................
16. 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 ...........
17. Negative feedback is employed in .................
18. When current feedback (negative) is applied to an amplifier, its output impedance ........

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