Process Control & Instrumentation Mcqs for Chemical

Q.  Which of the following is an undesirable dynamic characteristic of an instrument ?

a. Reproducibility
b. Dead zone
c. Time lag
d. Static error


ANSWER: See Answer
 
No explanation is available for this question!
MCQs:  The level of a liquid under pressure can be determined using___________________?
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MCQs:  Which of the following can measure temperatures in the range of – 20 to 300°C ?
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MCQs:  _____________ is an example of distributed parameter system ?
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MCQs:  The thermal emf-temperature relationship of most thermocouples is_________________?
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MCQs:  Which of the following thermocouples has the widest temperature measurement range ?
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MCQs:  In Bode plot, φ vs. ω is plotted on a/an ______________ graph paper?
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MCQs:  Cascade control means _______________?
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MCQs:  What is the normal percentage of rhodium in platinum + rhodium element used in the thermocouple ?
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MCQs:  Pick out the most suitable instrument for measuring temperature in the range of-40 to 425°C ?
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MCQs:  A first order system with a time constant of 1 min is subjected to frequency response analysis. At an input frequency of 1 radian/min, the phase shift is______________?
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MCQs:  Liquid flow rate in a small channel is best measured by a/an____________________?
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MCQs:  Thermal wells are used in the temperature measurement to____________________?
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MCQs:  Feed forward controller accounts for the ______________ changes?
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MCQs:  The open loop transfer function of a process is K [{(s + 1) (s + 4)}/{(s + 2) (s + 3)}]. In the root locus diagram, the poles will be at ___________________?
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MCQs:  Accurate temperature measurement performance of a radiation pyrometer cannot be affected, if the ?
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MCQs:  Stability of a control system containing a transportation lag can be best analysed by_______________?
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MCQs:  Thermocouple in a thermal well behaves as a true ________________?
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MCQs:  Number of poles in a system with transfer function 1/(s2 + 2s2 + 1) is ________________?
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MCQs:  Radiation pyrometers as compared to thermocouples____________________?
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MCQs:  Bourdon gauges are used for measuring pressure (kg/cm2) ?
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