What happens to the non-linear distortion due to the initiation of the negative feedback?(a) level of non- linear distortion increases(b) level of non- linear distortion decreases(c) level of non- linear distortion remains stable(d) level of non-linear distortion changes sinusoidalThe question was posed to me in a job interview.I'd like to ask this question from Properties of Negative Feedback topic in division Differential and Multistage Amplifiers of Electronic Devices & Circuits

What happens to the non-linear distortion due to the initiation of the

1.	What happens to the non-linear distortion due to the initiation of the negative feedback?(a) level of non- linear distortion increases(b) level of non- linear distortion decreases(c) level of non- linear distortion remains stable(d) level of non-linear distortion changes sinusoidalThe question was posed to me in a job interview.I'd like to ask this question from Properties of Negative Feedback topic in division Differential and Multistage Amplifiers of Electronic Devices & Circuits
Answer» The correct choice is (B) LEVEL of non- linear distortion decreases The explanation: Non- linear distortion generally happens because of ESSENCE of non linearity in the exchange qualities of transistor. If a large amplitude signal is connected to an amplifier to extend the operation of a device BEYOND the linear operational range, then it also generates the non – linear distortion. The effective input to an amplifier starts to reduce as the negative feedback is introduced; which eventually helps it to OPERATE in the linear region. This ability of negative feedback turns out to be beneficial in minimizing the level of non-linear distortion.

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