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Process Control and Instrumentation

Process Control and Instrumentation
Reference points i.e., ice point and steam point in Reaumer temperature scale are respectively

- 273° & 80°
32° & 460°
0° & 80°
32° & 80°

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Process Control and Instrumentation
Humidity of air can be determined by a

Mass spectrometer
Polarimeter
Sling psychrometer
Chromatograph

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Process Control and Instrumentation
Which of the following thermometers is not suitable for distant reading upto 60 metres?

Vapor pressure thermometer
Mercury in glass thermometer
Resistance thermometer
Constant volume gas thermometer

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Process Control and Instrumentation
Gain margin is equal to the

Gain in P-I controller
Gain in P controller
Reciprocal of amplitude ratio
Amplitude ratio

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Process Control and Instrumentation
Reset rate is the another term used for __________ time.

Integral
Dead
Derivative
None of these

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Process Control and Instrumentation
The term analogous to voltage in a single tank system is the

Level of liquid
Liquid volume in the tank
Heat content of the system
Flow rate

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