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Process Control and Instrumentation

Process Control and Instrumentation
Characteristic equation is the denominator of __________ loop transfer function.

Neither A Nor B Here
Open
Both A & B Here
Closed

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Process Control and Instrumentation
In a single tank system, the transfer function of __________ to inlet flow rate is 1/TS+1.

Both A & B Here
Level
Outlet flow rate
Neither A nor B Here

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Process Control and Instrumentation
Alphatron measures pressure __________ microns.

< 0.1
> 3
< 3
< 1

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Process Control and Instrumentation
Which of the following thermocouples is incapable of measuring sub-zero (i.e., < 0°C) temperature?

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

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Process Control and Instrumentation
What is the normal percentage of rhodium in platinum + rhodium element used in the thermocouple?

13
0.1
3
29

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Process Control and Instrumentation
Which of the following is not classified as a thermo electric pyrometer

Resistance thermometer
Radiation pyrometer
Optical pyrometer (disappearing filament type)
Thermocouple

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