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Process Control and Instrumentation

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

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

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Process Control and Instrumentation
Very low pressure is expressed in microns(μ), which is equal to __________ mm of Hg coloumn (absolute) at 0°C.

0.001
0.0001
0.1
0.01

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Process Control and Instrumentation
The __________ of a vapor pressure thermometer is a functioning element.

Bulb
Bourdon tube
None of these
Pointer

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Process Control and Instrumentation
Pick out the first order system from among the following.

Non-interacting system of two tanks in series
Mercury in glass thermometer kept in boiling water
Interacting system of two tanks in series
Damped vibrator

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Process Control and Instrumentation
Continuous shell temperature measurement in a liquid-liquid heat exchanger is done by a

Vapor pressure thermometer
Mercury in glass thermometer
Thermocouple
Reistance thermometer

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Process Control and Instrumentation
An emf of the order of mV is generated when two solutions of different hydrogen ion concentration are separated by a thin glass wall. This is the working principle of a

Polarograph
Polarimeter
Chromatograph
PH meter

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