In negative feedback

What is the practical utility of positive feedback and negative feedback?

The overall gain of a multistage amplifier is 100. When negative feedback is applied,the gain reduces to 10.Find the fraction of the output that is feedback to the input

The questions below consist of a set of labelled sentences. Out of the four options given, select the most logical order of the sentences to form a coherent paragraph. P. In that frame of mind, we have little sense of identity, safety or security Q. Courage is required to explore our secret life be cause we must first with draw from the social mirror, where we are fed positive and negative feedback continuously. S. As we get used to this social feedback, it becomes a comfort zone. R. And we may opt to avoid self examination and idle away our time in a vacuum of reverie and rationalization.

In a negative feedback mechanism :

If the feedback voltage is increased in a negative feedback amplifier , then

What do you mean by negative feedback system? Illustrate the negative feedback mechanism for controlling body temperature.