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Process Control and Instrumentation

Process Control and Instrumentation
Humidity of air can be determined by a

Sling psychrometer
Mass spectrometer
Polarimeter
Chromatograph

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Process Control and Instrumentation
Measurement of sub-zero Celcius temperature in industry is done most commonly by

Gas thermometers
Thermocouples
Bi-metallic thermometers
Resistance thermometers

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Process Control and Instrumentation
Liquid discharge from a tank or reservoir can not be measured by

Notches
Orificemeters
Weirs
Mouthpieces

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Process Control and Instrumentation
Meleoid gauge measures the __________ pressure.

Sub-atmospheric
Atmospheric
Positive
Very high

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Process Control and Instrumentation
Which of the following is not suitable for measuring the temperature of a red hot object in the range of 800 - 1600°C?

Photoelectric pyrometer
Optical pyrometer
Radiation pyrometer
Thermocouples

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

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

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