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Process Control and Instrumentation

Process Control and Instrumentation
Pick out the most suitable instrument for measuring temperature in the range of-40 to 425°C.

Radiation pyrometer
Bimetallic thermometer
Mercury thermometer
None of these

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Process Control and Instrumentation
Which of the following is never used as an element of industrial resistance thermometer?

30% iron + 70% nickel
Lead
Nickel
Copper

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Process Control and Instrumentation
Paramagnetism method is not used for the composition determination of __________ in gases.

Oxides of nitrogen
Any of these
Carbon dioxide
Oxygen

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Process Control and Instrumentation
Bourdon tube is never made of

Monel metal
Stainless steel
Cast iron
Phosphor bronze

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Process Control and Instrumentation
Which of the following relates the absorption & evolution of heat at the junctions of a thermocouple to the current flow in the circuit?

Thomson effect
Seebeck effect
Peltier effect
Joule heating effect

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Process Control and Instrumentation
Temperature measuring instruments are standardised mostly with __________ points of pure substances.

Neither A nor B Here
Melting
Both A & B Here
Boiling

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