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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
Solids
Alkali metals
Isotopes

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Process Control and Instrumentation
Liquid column manometers are used for measuring the pressure __________ kgf/cm² .

> 2(gage)
< 10 (gage)
< 3 (gage)
< atmospheric

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Process Control and Instrumentation
An amplitude ratio of 0.1 corresponds to __________ decibels.

-10
10
-20
20

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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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Process Control and Instrumentation
Starting temperature of optical radiation pyrometer is __________ °C.

400
1500
800
1200

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Process Control and Instrumentation
Flapper nozzle is used in a/an __________ controller.

Pneumatic
None of these
Hydraulic
Electronic

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