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Process Control and Instrumentation

Process Control and Instrumentation
Mercury manometer (U-tube type) exemplifies a __________ order system.

Second
Zero
Third
First

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

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

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Process Control and Instrumentation
Thermistors are made of

Nickel-chromium alloys
Metal oxides
Iron-copper alloys
Ultra pure metals

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Process Control and Instrumentation
In a shell and tube heat exchanger, the flow rate of heating/cooling fluid is the __________ variable.

None of these
Controlled
Load
Manipulated

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Process Control and Instrumentation
__________ are analysed using a polarograph.

Solids
Gases
Liquids
Isotonic solutions

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Process Control and Instrumentation
Liquid levels in autocalves are measued by

Simple float
Differential float type manometer
Glass gauge
None of these

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