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Thermal stability is dependent on thermal runaway which is_________

Thermal stability is dependent on thermal runaway which is_________ Correct Answer an uncontrolled positive feedback

Thermal runaway is a self destruction process in which an increase in temperature creates such a condition which in turn increases the temperature again. This uncontrolled rise in temperature causes the component to get damaged.

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Thermal runaway is_________
Consider the following statements with respect to the feedback from the control systems: 1. The feedback can improve stability or be harmful to stability if it is not properly applied. 2. The feedback can always improve stability. 3. In many situations, the feedback can reduce the effect of noise and disturbance on system performance. 4. In general, the sensitivity of the system gain of a feedback system of a parameter variation depends on where the parameter is located. Select the correct statements.
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Which of the following biasing techniques are prone to thermal runaway?