Process Control & Instrumentation Mcqs for Chemical


Q.  Nickel percentage in invar which is an iron-nickel alloy, and is used as a thermocouple material is __________________?

a. 12
b. 36
c. 54
d. 68


ANSWER: See Answer
 
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MCQs:  The transfer function of a second order system is _____________________?
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MCQs:  Range of hydrogen gas constant volume thermometer is _____________ °C?
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MCQs:  In an exothermic chemical reactor, the manipulated variable is the flow rate of_______________?
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MCQs:  Which of the following thermocouples is the most suitable for measuring a temperature of about 1600°C in an oxidizing atmosphere ?
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MCQs:  Temperature measurement by optical pyrometer is done above ____________ point, which is 1063°C ?
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MCQs:  Degree to which an instrument indicates the changes in measured variable without dynamic error is called its ___________________?
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MCQs:  Resistance of a gas in a vessel is given by (where, P = pressure, V = volume of the vessel, n = no. of moles of the gas, R = gas constant) ?
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MCQs:  Which of the following is not a differential pressure flow meter ?
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MCQs:  ____________ stability method uses open loop transfer function?
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MCQs:  The unit of ‘time constant’ of a system is the same as that of___________________?
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MCQs:  An aneroid barometer measures the _____________ pressure?
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MCQs:  What is the Laplace transform of impulse input having magnitude „X‟ ?
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MCQs:  The offset introduced by proportional controller with gain Kc in response of first order system can be reduced by ____________________?
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MCQs:  Which of the following is not a variable area flow meter ?
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MCQs:  Configuration of Bourdon spring tube is never made of _____________ shape?
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MCQs:  Nichol’s chart deals with __________________?
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MCQs:  The deflection in diaphragm (which is used as pressure sensor in pneumatic and electronic instruments) is dependent on the metal thickness, its diameter D. and shape & number of corrugations. Its deflection is proportional to_______________?
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MCQs:  In a shell and tube heat exchanger, the flow rate of heating/cooling fluid is the ______________ variable?
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MCQs:  Reset rate is the another term used for ____________ time?
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MCQs:  Positioning controllers are used for _______________?
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