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EE AND ECE - Amplifiers with Negative Feedback MCQs
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EE AND ECE - Amplifiers with Negative Feedback MCQs
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18 Questions

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

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