Chemical Engineering :: Process Control and Instrumentation
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A typical example of a physical system with under damped characteristic is a
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A bolometer is
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Thermal wells are used in the temperature measurement to
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The offset introduced by proportional controller with gain Kcin response of first order system can be reduced by
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A system with a double pole at the origin is unstable since the corresponding term in the time domain
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To increase the speed of response of a pressure spring liquid or gas expansion thermometer, the clearance space between the thermometer bulb and the thermal well should not be filled with
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In a second order under damped system, the
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In an exothermic chemical reactor, the manipulated variable is the flow rate of
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Very low pressure is expressed in microns(μ), which is equal to __________ mm of Hg coloumn (absolute) at 0°C.
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A.
time required for the response of first reach its ultimate value is called the response time.
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B.
overshoot (which is a measure of how much the response exceeds the ultimate value) increase with the decrease of damping co-efficient e.
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C.
decay ratio (which is the ratio of the sizes of successive peaks) is equal to the reciprocal of overshoot.
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D.
characteristics of a step response is represented by
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