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Process Control and Instrumentation

Process Control and Instrumentation
In an exothermic chemical reactor, the manipulated variable is the flow rate of

Reactants
Product
None of these
Coolant

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Process Control and Instrumentation
Temperature measurement by optical pyrometer is done above __________ point, which is 1063°C.

Gold
Silver
Nickel
Antimony

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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.

0.1
0.001
0.0001
0.01

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Process Control and Instrumentation
Helium gas constant volume thermometer is suitable for the measurement of a temperature of __________ °C.

> 0
< 0
> 800
< 100

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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
The inverse Laplace transform of the function f(s) = 1/S(1 + S) is

1 + e-t
1 - et
1 + et
1 - e-t

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