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Process Control and Instrumentation

Process Control and Instrumentation
Pressure of 0.0001 absolute psi can be measured by __________ gauge

Pirani
Mcloid
Thermocouple
None of these

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Process Control and Instrumentation
The function of a transducer is to

Codify/decodify the input signal
Convert the primary signal into a more useful quantity, usually an electric impulse
Amplify the input signal
Modify the input signal

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Process Control and Instrumentation
Continuous measurement of specific gravity of a liquid is done by

Displacement meter
Contact-type electric indicators
Both A and C
Hydrometer

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Process Control and Instrumentation
Which thermocouple can be used to measure a temperature of around 1400°C ?

Platinum-platinum+rhodium
Copper-constantan
Aluminium-chromel
None of these

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Process Control and Instrumentation
Continuous shell temperature measurement in a liquid-liquid heat exchanger is done by a

Mercury in glass thermometer
Vapor pressure thermometer
Thermocouple
Reistance thermometer

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Process Control and Instrumentation
Which of the following thermocouples has the widest temperature measurement range?

Iron-constantan
Copper-constantan
Chromel-alumel
Platinum-platinum/rhodium

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