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Process Control and Instrumentation

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

Inconel
Vycor (a glass)
Steel
Nichrome

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Process Control and Instrumentation
Thermal conductivity cell is the primary element of a/an __________ analyser.

Oxygen
Carbon monoxide
Sulphur dioxide
Carbon dioxide

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Process Control and Instrumentation
Working principle of mercury in glass thermometer is based on volumetric expansion of mercury with increase in temperature. Which of the following undergoes minimum volumetric expansion for a given temperature change?

Methyl alcohal
Mercury
Water
Carbon-tetrachloride

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Process Control and Instrumentation
In a single tank system, the transfer function of __________ to inlet flow rate is 1/TS+1.

Both A & B Here
Neither A nor B Here
Level
Outlet flow rate

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Process Control and Instrumentation
What is the Laplace transform of impulse input having magnitude 'X' ?

1/X
X
X²
1

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Process Control and Instrumentation
Working principle of bimetallic thermometers is difference in linear co-efficient of thermal expansion of two strips of different metals welded together. Which of the following has the maximum thermal co-efficient of linear expansion?

Chromel
Nickel
Invar
Brass

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