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Process Control and Instrumentation

Process Control and Instrumentation
Change of angle of refraction with composition comprises the working principle of a

Polarograph
Refractrometer
Spectrometer
Polarimeter

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Process Control and Instrumentation
Instrumentation in a plant offers the advantage of

All of these
Better quality of product
Greater operation economy
Greater safety of operation

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Process Control and Instrumentation
The term analogous to voltage in a single tank system is the

Flow rate
Liquid volume in the tank
Level of liquid
Heat content of the system

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Process Control and Instrumentation
Which of the following is a desirable characteristic of an instrument?

High measuring lag
High fidelity
High drift
Poor reproducibility

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Process Control and Instrumentation
Liquid argon level in a pressurised storage tank (at 3 kg/cm² ) is measured by a/an

External float gage
Differential pressure gage
None of these
Gage glass

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Process Control and Instrumentation
The pressure sensing element of elastic type pressure gauge is never made in the form of a

Bourdon tube
Bellow
Strip
Diaphragm

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