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Process Control and Instrumentation

Process Control and Instrumentation
Liquid argon level in a pressurised storage tank (at 3 kg/cm² ) is measured by a/an

Gage glass
External float gage
None of these
Differential pressure gage

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Process Control and Instrumentation
Turbine flow meters are suitable for

Aerospace and in air borne applications
Both B and C
Very limited flow ranges
Cryogenic flow measurements

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

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

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Process Control and Instrumentation
Sub-zero temperature (< 0°C) can be measured by a constant volume gas thermometer employing

Helium
None of these
Nitrogen
Hydrogen

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Process Control and Instrumentation
To increase the speed of response of a pressure spring liquid or gas expansion thermometer, the clearance space between the thermometer bulb and the thermal well should not be filled with

Oil
Air
A metal powder or graphite
Mercury

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Process Control and Instrumentation
Which of the following thermocouples can measure the maximum temperature?

Tungsten-molybdenum
Platinum-rhodium
Chromel-alumel
Iron-constantan

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