Process Control and Instrumentation
In a second order under damped system, the

Overshoot (which is a measure of how much the response exceeds the ultimate value) increase with the decrease of damping co-efficient e
None of these
Time required for the response of first reach its ultimate value is called the response time
Decay ratio (which is the ratio of the sizes of successive peaks) is equal to the reciprocal of overshoot

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Process Control and Instrumentation
Accurate temperature measurement performance of a radiation pyrometer can not be affected, if the

Object and surrounding are at almost the same temperature
Object is transparent
Object has varying emissivity
Enhancement or attentuation of redia-tion occurs in the sighting path

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