Discussion
Statement I: Feedback reduces distortion generated inside the loop.
Statement II: Feedback reduces noise arriving at the amplifier's input.
In the light of the above statements, choose the correct answer.
Answer: A
The first is true and the second is false: an error inside the loop is compared against the input and divided by one plus the loop gain, while noise at the input is indistinguishable from signal and is amplified with it. Where an imperfection enters is the whole question, and it decides whether feedback is a remedy or an irrelevance. This is why a feedback amplifier can have superb distortion figures and an unremarkable noise figure.
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