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Process Control and Instrumentation

Process Control and Instrumentation
Degree to which an instrument indicates the changes in measured variable without dynamic error is called its

Reproducibility
Fidielity
Speed of response
Static characteristics

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Process Control and Instrumentation
The __________ of a vapor pressure thermometer is a secondary element.

Bourdon tube
Bulb
None ofthese
Pointer

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Process Control and Instrumentation
Which of the following is never used as an element of industrial resistance thermometer?

30% iron + 70% nickel
Copper
Nickel
Lead

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Process Control and Instrumentation
In Bode plot, A.R. vs. w is plotted on a/an __________ graph paper.

Semi-log
Triangular
Log-lag
Ordinary

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Process Control and Instrumentation
Thermal wells are used in the temperature measurement to

Increase the sensitivity
Increase the fidelity
Guard against corrosive and oxidising action on thermocouple materials
Reduce measuring lag

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Process Control and Instrumentation
__________ are analysed using a polarograph.

Solids
Liquids
Gases
Isotonic solutions

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