Process Control and Instrumentation Which of the following thermocouples is incapable of measuring sub-zero (i.e., < 0°C) temperature? Platinum-platinum + rhodium Chromel-alumel Iron-constantan Copper-constantan Platinum-platinum + rhodium Chromel-alumel Iron-constantan Copper-constantan ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Specific conductance is defined as the reciprocal of resistance in ohms of 1c.c. of liquid at a specified temperature. Its value for distilled water is about __________ micro mho/cm³. 50 10 100 1 50 10 100 1 ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Thermistor, which has high temperature co-efficient of resistivity, is used as the sensing element in resistance thermometer. It is a/an Solid semi-conductor Insulator Conductor Liquid semi-conductor Solid semi-conductor Insulator Conductor Liquid semi-conductor ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Temperature measuring instruments are standardised mostly with __________ points of pure substances. Neither A nor B Here Melting Boiling Both A & B Here Neither A nor B Here Melting Boiling Both A & B Here ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Dilute wine was used as a thermometric liquid initially to develop temperature scale. First emperical temperature scale developed was the __________ scale. Reaumer Centigrade Fahrenheit Kelvin Reaumer Centigrade Fahrenheit Kelvin ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Emf generated in a thermocouple depends on the temperature Of hot junction only Difference between cold junction and atmospheric temperature Difference between hot and cold junctions Of cold junction only Of hot junction only Difference between cold junction and atmospheric temperature Difference between hot and cold junctions Of cold junction only ANSWER DOWNLOAD EXAMIANS APP
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