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Process Control and Instrumentation

Process Control and Instrumentation
An aneroid barometer measures the __________ pressure.

Atmospheric
Gage
Absolute
Vacuum

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Process Control and Instrumentation
The inverse Laplace transform of the function f(s) = 1/S(1 + S) is

1 - e-t
1 - et
1 + e-t
1 + et

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Process Control and Instrumentation
Radiation pyrometers as compared to thermocouples

Can't measure the temperature of moving objects
Has a slower speed of response
Can measure higher temperature
Is more affected by corrosive atmosphere

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Process Control and Instrumentation
Thermal conductivity measurement is used for the determination of

Specific gravity of petrofuels
O₂ percentage in the flue gas
Composition of an alloy
CO₂ percentage in the flue gas

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Process Control and Instrumentation
Flow rate of sludge is not measured by a/an

Orificemeter
Kennison nozzle
Both B & C
Open weir

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Process Control and Instrumentation
Which is the most suitable instrument for measuring pressure below 3 microns?

Alphatron
Ionisation gauge
Bourdon guage
Mcleoid gauge

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