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Process Control and Instrumentation

Process Control and Instrumentation
Working principle of disappearing filament type optical pyrometer is based on the

Kirchoff's law
Wien's law
Seebeck effect
Peltier effect

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Process Control and Instrumentation
Working principle of mercury in glass thermometer is based on the __________ of mercury with increase in temperature.

Increase of pressure
Volumetric expansion
Increase of thermal conductivity
Differential linear expansion

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Process Control and Instrumentation
A system with a double pole at the origin is unstable since the corresponding term in the time domain

Grows linearly with time
Grows exponentially with time
Decays linearly with time
Is a constant

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Process Control and Instrumentation
A bolometer is

Used for the measurement of thermal radiation
Neither A nor B Here
An element which senses optical input and delivers thermal output
Both A & B Here

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

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

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Process Control and Instrumentation
Polarisation of light forms the working principle of a

Polarimeter
Spectrometer
Polarograph
Chromatograph

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