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Process Control and Instrumentation

Process Control and Instrumentation
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?

CO
O₂
N₂
CO₂

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Process Control and Instrumentation
Routh stability method uses __________ loop transfer function.

Either A or B
Closed
Open
Neither A nor B

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Process Control and Instrumentation
Continuous shell temperature measurement in a liquid-liquid heat exchanger is done by a

Mercury in glass thermometer
Vapor pressure thermometer
Reistance thermometer
Thermocouple

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

Open weir
Pitot tube
Vane meter
Kennison nozzle

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Process Control and Instrumentation
Meleoid gauge measures the __________ pressure.

Positive
Atmospheric
Sub-atmospheric
Very high

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Process Control and Instrumentation
Non-metallic diaphragm used as pressure sensor in instruments is generally made of

Thick paper
Teflon
Synthetic rubber
Bakelite

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