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Process Control and Instrumentation

Process Control and Instrumentation
The thermal emf-temperature relationship of most thermocouples is

Parabolic
Exponential
Square root
Linear

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Process Control and Instrumentation
In a single tank system, the transfer function of level to inlet flow rate is

R/TS
R/(TS + 1)
1/TS
L(TS + l)

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Process Control and Instrumentation
Flow rate of a river is measured by a/an

Kennison nozzle
Pitot tube
Vane meter
Open weir

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Process Control and Instrumentation
Thermal conductivity measurement com-prises the working principle of a

CO₂ analyser
Spectrometer
Chromatograph
Polarimeter

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Process Control and Instrumentation
The __________ of a vapor pressure thermometer is a secondary element.

Bulb
Bourdon tube
None ofthese
Pointer

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Process Control and Instrumentation
A mercury thermometer can not be used to measure the temperature below the freezing point of mercury, which is __________ °C.

-11.9
-60.9
-80.9
-38.9

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