Correct Answer - Option 2 : Increased noise
Effect of negative Feedback:
Negative feedback:
The transfer function of the closed-loop transfer function, with negative feedback, is given by:
\(\frac{{G\left( s \right)H\left( s \right)}}{{1 + G\left( s \right)H\left( s \right)}}\)
The overall gain of the transfer function decreases with negative feedback.
Positive feedback:
In an open-loop system, we do not have any feedback path but in a closed-loop system, we have a feedback path.
The transfer function of the closed-loop transfer function, with positive feedback, is given by:
\(\frac{{G\left( s \right)H\left( s \right)}}{{1 - G\left( s \right)H\left( s \right)}}\)
The overall gain of the transfer function increases with positive feedback.