can some one help solve this question. the red X indicated that the anwser selec

Question

can some one help solve this question. the red X indicated that the anwser selected is incorrect.

For the example of a positive feedback system considered in lectures, what was the reason for the output not reaching the infinity? I do not recall any examples discussing positive feedback; The demonstration was interrupted before the output reached infinity; Hardware limitations; Since the system has a delay embedded; The system had a limiter; All other answers are incorrect. Why? The output in the example did reach infinity!

Explanation / Answer

outpur for positive feedback system can reach infinity as output is added in to input so it will generate more input rather than subtraction error. so outpur continue to increase and reach infinity. Thats the reason why we use negative fedback system so feedback will add only error signal and output of the sytem become more closer to the required output

so answer of your question is last option. But yes i don not have any idea that whether this was discussed in your class or not. so answer accordingly

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