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Process Control and Instrumentation

Process Control and Instrumentation
Positioning controllers are used for

Low loads
Flow rate changes
Temperature changes
High loads

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Process Control and Instrumentation
Transfer function of transportation lag is

None of these
E-TS
1/(TS + 1)
ETS

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Process Control and Instrumentation
Pick out the most suitable instrument for measuring temperature in the range of-40 to 425°C.

Bimetallic thermometer
Mercury thermometer
None of these
Radiation pyrometer

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Process Control and Instrumentation
A non-linear system will have __________ steady state values.

Three
One
More than one
Two

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Process Control and Instrumentation
Bimetal strips are not used in

Thermocouples
Bimetallic thermometers
Relays for opening & closing of electrical circuits
Thermostats

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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?

CO
O₂
CO₂
N₂

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