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Process Control and Instrumentation

Process Control and Instrumentation
Flame photometry is used for the determination of compositional analysis of

Isotopes
Solids
Natural gas
Alkali metals

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Process Control and Instrumentation
__________ temperature scale assigns 0° to the 'ice point' and 80° to the 'steam point'

Rankine
Farenhite
Celcius
Reumur

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Process Control and Instrumentation
Emf generated in a thermocouple depends on the temperature

Difference between hot and cold junctions
Difference between cold junction and atmospheric temperature
Of cold junction only
Of hot junction only

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

Static characteristics
Speed of response
Reproducibility
Fidielity

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Process Control and Instrumentation
The unit step response of the transfer function 1/(s² + 2s + 3)

Is overdamped
Has a non-zero slope at the origin
Is unstable
Has a damped oscillatory characteristics

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Process Control and Instrumentation
Dead zone in an instrument must be less than __________ percent of the scale.

8
0.2
4
1.5

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