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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?

O₂
CO₂
CO
N₂

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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
Measurement of pressure in ammonia reactor is done by

Inclined tube manometer
Pirani guage
U-tube manometer
Bourdon gauge

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Process Control and Instrumentation
Thermal conductivity cell is the primary element of a/an __________ analyser.

Carbon monoxide
Carbon dioxide
Sulphur dioxide
Oxygen

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Process Control and Instrumentation
Dead zone in an instrument must be less than __________ percent of the scale.

4
0.2
8
1.5

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Process Control and Instrumentation
The deflection of the free end of the bimetallic strips in a bimetallic thermometer with temperature is nearly

Hyperbolic
Parabolic
Linear
Non-linear

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