Chemical Engineering MCQs

Page No. 395

E.m.f. generated by thermocouples is of the order of ________________?


aMilli volts

✓


bMicro volts

✖


cVolts

✖


dKilo volts

✖


View Answer Milli volts

Liquid argon level in a pressurised storage tank (at 3 kg/cm2) is measured by a/an ____________________?


aGage glass

✖


bExternal float gage

✖


cDifferential pressure gage

✓


dNone of these

✖



Mercury manometer (U-tube type) exemplifies a ______________ order system?


aZero

✖


bFirst

✖


cSecond

✓


dThird

✖


View Answer Second

The experimental response of the controlled variable y(t) for a step change of magnitude ‘P’ in the manipulated variable x(t) is shown below: The appropriate transfer function of the process is_________________?


a(Q/P) e-(Q/R)S/(TdS + 1)

✖


b(Q/R) e-TdS/(Q/P) (S + 1)

✖


c(Q/P) e-TdS/(Q/R) (S + 1)

✓


d(Q/R) e-(P/Q)S/(TdS + 1)

✖



Smoke density of the flue gas going out of the chimney is measured by a __________________?


aPolarograph

✖


bThermal conductivity meter

✖


cPhoto electric cell

✓


dChromatograph

✖


View Answer Photo electric cell

Characteristic equation is the denominator of ____________ loop transfer function?


aOpen

✖


bClosed

✓


cBoth A. and B.

✖


dNeither A. nor B.

✖


View Answer Closed

Measurement of sub-zero Celsius temperature in industry is done most commonly by __________________?


aThermocouples

✖


bResistance thermometers

✓


cGas thermometers

✖


dBi-metallic thermometers

✖



Which of the following is not the triple point of water ?


a32°R

✓


b273°K

✖


c492°R

✖


d32°F

✖


View Answer 32°R

Flow rate through an orifice is _____________ the pressure differential?


aProportional to

✖


bInversely proportional to the square root of

✖


cProportional to the square root of

✓


dInversely proportional to the square of

✖



What is the ratio of output amplitude to input amplitude for a sinusoidal forcing function in a first order system ?


a1

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b> 1

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c< 1

✓


dNone of these

✖


View Answer < 1

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