Chemical Engineering MCQs

Page No. 398

Temperature measurement by optical pyrometer is done above ____________ point, which is 1063°C ?


aAntimony

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bGold

✓


cSilver

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dNickel

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View Answer Gold

Which of the following thermocouples is the most suitable for measuring a temperature of about 1600°C in an oxidizing atmosphere ?


aPlatinum-platinum + rhodium

✓


bIron-constantan

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cCopper-constantan

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dChromel-alumel

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In an exothermic chemical reactor, the manipulated variable is the flow rate of_______________?


aCoolant

✓


bReactants

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cProduct

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dNone of these

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View Answer Coolant

Range of hydrogen gas constant volume thermometer is _____________ °C?


a-10 to 20

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b0 to 100

✓


c100 – 500

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d400 – 1000

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View Answer 0 to 100

The transfer function of a second order system is _____________________?


a1/(T2s2 + 2ξTs + 1)

✓


b1/(T2s2 + 2Ts + 1)

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c1/(T2s2 + 2ξT + 1)

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dNone of these

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View Answer 1/(T2s2 + 2ξTs + 1)

Which of the following thermometers is not suitable for distant reading upto 60 metres ?


aVapor pressure thermometer

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bMercury in glass thermometer

✓


cConstant volume gas thermometer

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dResistance thermometer

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Thermal conductivity based continuous flue gas analyser makes use of varying thermal conductivity of the constituents of flue gases. Which of the following constituents of flue gases has the maximum thermal conductivity ?


aCO2

✓


bN2

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cO2

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dCO

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View Answer CO2

Flow rate of a river is measured by a/an____________________?


aPitot tube

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bVane meter

✓


cKennison nozzle

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dOpen weir

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View Answer Vane meter

Helium gas constant volume thermometer is suitable for the measurement of a temperature of ______________ °C?


a< 100

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b< 0

✓


c> 0

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d> 800

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View Answer < 0

To increase the speed of response of a pressure spring liquid or gas expansion thermometer, the clearance space between the thermometer bulb and the thermal well should not be filled with ________________?


aAir

✓


bA metal powder or graphite

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cOil

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dMercury

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View Answer Air

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