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Process Control and Instrumentation

Process Control and Instrumentation
Which of the following thermocouple materials does not contain nickel?

None of these
Constantan
Chromel
Alumel

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Process Control and Instrumentation
Minute depression of freezing point of a liquid solvent on addition of a solid solute can be best measured by a

Dilatometer
Bimetallic thermometer
Mercury thermometer
Beckman thermometer

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Process Control and Instrumentation
Which of the following is not a variable area flow meter?

Piston type meter
Magnetic flow meter
Orifice and tapered plug meter
Rotameter

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Process Control and Instrumentation
Which of the following is not classified as a thermo electric pyrometer

Thermocouple
Optical pyrometer (disappearing filament type)
Resistance thermometer
Radiation pyrometer

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Process Control and Instrumentation
Thermal conductivity measurement is used for the determination of

Specific gravity of petrofuels
Composition of an alloy
O₂ percentage in the flue gas
CO₂ percentage in the flue gas

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

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

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