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Process Control and Instrumentation

Process Control and Instrumentation
Mass spectrometer is used for the composition analysis of

Alloys
Solids
None of these
Isotopes

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Process Control and Instrumentation
On-off controllers are normally used for

Low loads
None of these
Flow rate changes
Temperature changes

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Process Control and Instrumentation
Thermal wells used in temperature measurements should have

Very thick walls
Low emissivity
High transmissivity of radiation
Polished surface

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Process Control and Instrumentation
Which of the following judges the accuracy of an instrument?

Drift
Dead zone
Static error
None of these

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Process Control and Instrumentation
Composition of natural gas is determined by the

Mass spectrometer
Both B and C
Chromatograph
Haldane apparatus

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Process Control and Instrumentation
Liquid levels in autocalves are measued by

None of these
Differential float type manometer
Simple float
Glass gauge

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