Chemical Engineering MCQs

Page No. 388

____________ is the static characteristics of an instrument?


aResponse


bTine lag


cDrift


dDynamic error


View Answer Drift

Pick out the wrong statement ?


aO2, NO and NO2 exhibit paramagnetic properties as a result of unpaired electrons


bCO2 is the strongest paramagnetic gas


cParamagnetic susceptibility of gases decreases with temperature


dParamagnetic susceptibility of gases permits the measurement of their concentration



Process degree of freedom indicates _______________ number of controllers to be used?


aThe maximum


bThe minimum


cBoth maximum and the minimum


dNothing about the


View Answer The maximum

Thermal conductivity measurement com-prises the working principle of a_________________?


aCO2 analyser


bPolarimeter


cSpectrometer


dChromatograph


View Answer CO2 analyser

Which of the following is a ‘contact’ pyrometer ?


aResistance pyrometer


bOptical pyrometer


cRadiation pyrometer


dInfra red pyrometer


View Answer Resistance pyrometer

Which of the following is not a second order instrument ?


aMercury in glass thermometer with covering


bBare mercury in glass thermometer


cPressure gauge with one bellow, two tubes and a tank


dNone of these



The _____________ of a vapor pressure thermometer is a functioning element?


aPointer


bBourdon tube


cBulb


dNone of these


View Answer Pointer

Pirani gauge is used for the measurement of________________?


aVery high pressure


bHigh vacuum


cLiquid level under pressure


dLiquid level at atmospheric pressure


View Answer High vacuum

Zirconia probe is used for the measurement of___________________?


aHumidity of air


b% CO2 in flue gas


c% O2 in flue gas


dSpeed of a submarine


View Answer % O2 in flue gas

Volumetric expansion is the working principle of the ______________ thermometers?


aMercury in glass


bConstant volume gas


cVapor pressure


dBimetallic


View Answer Mercury in glass

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