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Process Control and Instrumentation

Process Control and Instrumentation
Bimetal strips are not used in

Thermostats
Thermocouples
Relays for opening & closing of electrical circuits
Bimetallic thermometers

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Process Control and Instrumentation
Thermal well made of __________ gives the fastest speed of response, while measuring temperature by thermocouples.

Inconel
Nichrome
Vycor (a glass)
Steel

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Process Control and Instrumentation
Magnetic flowmeters are generally not used for the velocity/flow measurement of hydrocarbons due to their

Low thermal conductivity
Low electrical conductivity
Low flash point
High viscosity index

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

273°K
32°R
32°F
492°R

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Process Control and Instrumentation
Radiation pyrometers as compared to thermocouples

Can't measure the temperature of moving objects
Has a slower speed of response
Can measure higher temperature
Is more affected by corrosive atmosphere

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Process Control and Instrumentation
Psychrometer determines the

Humidity of gases
Moisture content of solids
Water of crystallisation
Hygroscopic nature of solids

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MORE MCQ ON Process Control and Instrumentation

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