Answer / Sanjay Kumar Kanaojia

Feedback refers to the return of a portion of the output signal to the input of a system for comparison with the original input. There are three main types of feedback: Positive feedback, which amplifies disturbances and can lead to oscillation; Negative feedback, which reduces errors and stabilizes systems by counteracting them; and Regenerative Feedback, which is used in some cases of positive feedback for specific applications, such as regenerative amplifiers.

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