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Process Control and Instrumentation

Process Control and Instrumentation
Which of the following is not the triple point of water?

32°F
492°R
32°R
273°K

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Process Control and Instrumentation
On-off controllers are normally used for

Flow rate changes
None of these
Low loads
Temperature changes

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Process Control and Instrumentation
Zirconia probe is used for the measurement of

Speed of a submarine
Humidity of air
% CO₂ in flue gas
% O₂ in flue gas

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Process Control and Instrumentation
Flow rate of sludge is not measured by a/an

Orificemeter
Open weir
Both B & C
Kennison nozzle

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

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

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Process Control and Instrumentation
Flow rate of those fluids which are insensitive to changes in their density, viscosity or flow velocity profile can be best measured by a

Magnetic flowmeter
Pitot tube
Turbine flowmeter
Flow nozzle type flowmeter

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