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Process Control and Instrumentation

Process Control and Instrumentation
Humidity of air can be determined by a

Chromatograph
Mass spectrometer
Sling psychrometer
Polarimeter

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Process Control and Instrumentation
Continuous flue gas analyser makes use of paramagnetic properties of some of its constituents, which move towards the strongest part of the magnetic field thus displacing diamagnetic gases. Which of the following gases is diamagnetic?

CO₂
NO
O₂
NO₂

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Process Control and Instrumentation
The root locus method, a pole of a transfer function G(s) is the value of s for which G(s) approaches

-1
1
∞

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Process Control and Instrumentation
Zirconia probe is used for the continuous measurment of __________ flue gases going out of the furnace.

Temperature of
Carbon monoxide in
Carbon dioxide in
Oxygen in

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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?

N₂
O₂
CO
CO₂

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Process Control and Instrumentation
The fluid used in hydraulic controller is

Water
Oil
Air
Steam

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