Exam Question
(a) What is meant by negative and positive feed backs? Explain the characteristics of negative feed back. (6)
(b) Compare the series and parallel resonance circuits. Find the frequency at which the following circuit resonates.
Class 2 (2nd Engineer)
MET
📅 Jun 2018
Reference Answer
(a) Negative and positive feedback:
Negative Feedback : When a portion of the output signal is fed back to the input in such a way that it is out of phase with the input signal and opposes it.
Reduces system gain, improves stability, and increases accuracy.
Commonly used in control systems, amplifiers, and oscillators to stabilise performance.
Negative Feedback : When a portion of the output signal is fed back to the input in such a way that it is out of phase with the input signal and opposes it.
Reduces system gain, improves stability, and increases accuracy.
Commonly used in control systems, amplifiers, and oscillators to stabilise performance.
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