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Process Control and Instrumentation

Process Control and Instrumentation
Thermistors are made of

Nickel-chromium alloys
Iron-copper alloys
Ultra pure metals
Metal oxides

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Process Control and Instrumentation
In a shell and tube heat exchanger, the outlet temperature of heating/cooling fluid is the __________ variable.

None of these
Load
Manipulated
Controlled

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Process Control and Instrumentation
Presence of a small amount of water in the organic systems can be determined by the __________ method.

Electrical conductivity
Emission spectroscopy
Polarimetry
Dielectric constant end loss factor

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

Oxygen
Oxides of nitrogen
Any of these
Carbon dioxide

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

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

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Process Control and Instrumentation
Which of the following flow-metering instru-ments is an areameter?

Rotameter
Hot wire anemometer
Venturimeter
Pitot tube

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