Under what condition does a closed loop negative feedback becomes unst

1.	Under what condition does a closed loop negative feedback becomes unstable
Answer» Feedback is the process by which a fraction of the output signal, either a voltage or a current, is USED as an input. If this feed back fraction is opposite in VALUE or phase (“anti-phase”) to the input signal, then the feedback is said to be NEGATIVE Feedback, or degenerative feedback. Negative feedback opposes or subtracts from the input signals giving it many advantages in the design and stabilisation of control systems. For example, if the systems output changes for any reason, then negative feedback AFFECTS the input in such a way as to COUNTERACT the change.

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Under what condition does a closed loop negative feedback becomes unstable

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