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Process Control and Instrumentation

Process Control and Instrumentation
Nitrogen gas constant volume thermometer is suitable for measuring a temperature of __________ °C.

> 100
0-100
> 50
< 0

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Process Control and Instrumentation
The fluid used in hydraulic controller is

Water
Steam
Air
Oil

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Process Control and Instrumentation
Emission spectroscopy is used for

Determining water purity
NOxdetermination
Solids and metal analysis
Determination of CO₂ in gases

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Process Control and Instrumentation
Mercury manometer (U-tube type) exemplifies a __________ order system.

Second
First
Third
Zero

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

-10
-20
10
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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