Chemical Engineering MCQs

Page No. 397

Configuration of Bourdon spring tube is never made of _____________ shape?


aCircular


bSemi-circular


cHelical


dSpiral


View Answer Circular

Which of the following is not a variable area flow meter ?


aPiston type meter


bRotameter


cMagnetic flow meter


dOrifice and tapered plug meter


View Answer Magnetic flow meter

The offset introduced by proportional controller with gain Kc in response of first order system can be reduced by ____________________?


aReducing value of Kc


bIntroducing integral control


cIntroducing derivative control


dNone of the above



What is the Laplace transform of impulse input having magnitude „X‟ ?


aX


bX2


c1/X


d1


View Answer 1

An aneroid barometer measures the _____________ pressure?


aAtmospheric


bAbsolute


cVacuum


dGage


View Answer Absolute

The unit of ‘time constant’ of a system is the same as that of___________________?


aVelocity


bTime


c(Time)-1


dNone of these


View Answer Time

____________ stability method uses open loop transfer function?


aNyquist


bMikhailov


cRuth


dNone of these


View Answer Nyquist

Which of the following is not a differential pressure flow meter ?


aRotameter


bFlow nozzle


cOrificemeter


dVenturimeter


View Answer Rotameter

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) ?


aV/nRT


bnRT/V


cnRT/P


dP/nRT


View Answer V/nRT

Degree to which an instrument indicates the changes in measured variable without dynamic error is called its ___________________?


aSpeed of response


bReproducibility


cFidelity


dStatic characteristics


View Answer Fidelity

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