7. Regarding negative feedback in amplifiers which statement is WRONG ?
(a) it widens the separation between 3 dB frequencies (b) it increases the gain-bandwidth product (c) it improves gain stability (d) it reduces distortion
Answer
Answer : (b)
Explanation
Explanation : No answer description available for this question. Let us discuss.
Amplifiers » Exercise - 120. The value of negative feedback fraction is always .......... (a) less than 1 (b) more than 1 (c) equal to 1 (d) none of the above
Amplifiers » Exercise - 123. If the feedback fraction of an amplifier is 0.01, then voltage gain with negative voltage feedback is approximately ....... (a) 500 (b) 100 (c) 1000 (d) 5000
Tags: amplifiers, feedback, exercise, gain, negative, electronics, engineering
Feedback Amplifiers » Exercise - 110. The gain of a negative feedback amplifier is 40 dB. If the attenuation of the feedback path is 50 dB, then the gain of the amplifier without feedback is : (a) 78.92 (b) 146.32 (c) 215.51 (d) 317.23
Tags: feedback, amplifiers, gain, db, exercise, negative, electronics, engineering
Amplifiers » Exercise - 122. 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) 101.5 db (b) 300 db (c) 103 db (d) 97 db
Tags: db, amplifiers, gain, feedback, exercise, negative, electronics, engineering