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Process Control and Instrumentation

Process Control and Instrumentation
Process degree of freedom indicates __________ number of controllers to be used.

Both maximum and the minimum
Nothing about the
The maximum
The minimum

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Process Control and Instrumentation
Platinum resistance thermometer can be used upto antimony point which is __________ °C, and is the temperature of equilibrium between solid antimony & liquid antimony at normal atmospheric pressure.

630.74
961.93
1261.93
1064.43

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Process Control and Instrumentation
Working principle of radiation pyrometer is based on the

Seebeck effect
Stafan-Boltzman law
Kirchoffs law
Wien's law

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Process Control and Instrumentation
Which of the following thermocouples can measure the maximum temperature?

Iron-constantan
Chromel-alumel
Tungsten-molybdenum
Platinum-rhodium

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

Reactants
None of these
Product
Coolant

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Process Control and Instrumentation
Change of angle of refraction with composition comprises the working principle of a

Polarimeter
Spectrometer
Polarograph
Refractrometer

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