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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?

N₂
O₂
CO
CO₂

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Process Control and Instrumentation
Liquid flow rate in an open channel can not be measured by a/an

V-notch
Rectangular weir
Orifice meter
Cipolletti weir

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Process Control and Instrumentation
Which of the following thermocouples has the widest temperature measurement range?

Copper-constantan
Platinum-platinum/rhodium
Iron-constantan
Chromel-alumel

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Process Control and Instrumentation
Number of poles in a system with transfer function 1/(s² + 2s² + 1) is

1
5
3
2

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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
Bode stability method uses __________ loop transfer function.

Open
Closed
Neither A nor B Here
Either A Or B Here

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