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PROCESS CONTROL AND INSTRUMENTATION

Process Control and Instrumentation
Which of the following temperature measuring instruments need not touch the object whose temperature is being measured?

Radiation/infrared pyrometer
Filled system thermometer
Mercury in glass thermometer
Thermo electric pyrometer

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Process Control and Instrumentation
Emf developed by a thermocouple while measuring a temperature of 400°C is 22 mV. The type of thermocouple used is

Platinum-rhodium
Platinum-platinum+rhyodium
Iron-constantan
Chromel-alumel

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Process Control and Instrumentation
Platinum resistance thermometer is the international standard for temperature measurement between

Both A and B
Neither A nor B
Triple point of hydrogen and freezing point of antimony
13.81°K to 903.9°K

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

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

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Process Control and Instrumentation
Mercury thermometer can be used to measure the temperature upto __________ °C.

350
750
250
100

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