Discussion
Match each feedback effect with its factor.
List I
A. Closed-loop gain
B. Bandwidth
C. Internal distortion
List II
P. Divided by one plus loop gain
Q. Multiplied by one plus loop gain
R. Divided by one plus loop gain
Select the correct match.
Answer: B
The pairing is A-P, B-Q, C-R: gain and distortion are both divided while bandwidth is multiplied, all by the same factor. That one number governs the single cost and every benefit is why computing the loop gain first answers every question about a feedback circuit, and why designers speak of a loop's quality in terms of it rather than of the components.
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