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Process Control and Instrumentation

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

Natural gas
Alkali metals
Isotopes
Solids

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Process Control and Instrumentation
Maximum differential pressure in liquid manometer is __________ psi.

20
30
40
50

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Process Control and Instrumentation
Liquid levels in autocalves are measued by

Differential float type manometer
Glass gauge
None of these
Simple float

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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
Chromel-alumel
Platinum-platinum + rhodium
Copper-constantan

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Process Control and Instrumentation
Mcleoid gauge is used to measure the

Vacuum
Flow rate
Pressure
Point velocity

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Process Control and Instrumentation
Typical specifications for design stipulates the gain margin and phase margin to be respectively

< 1.7 and > 30°
> 1.7 and < 30°
> 1.7 and > 30°
< 1.7 and < 30°

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