Process Control and Instrumentation Which of the following thermocouples is capable of measuring a temperature of -50°C? Copper - constantan Iron-constantan Chromel - alumel Platinum - platinum + rhodium Copper - constantan Iron-constantan Chromel - alumel Platinum - platinum + rhodium ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Working principle of mercury in glass thermometer is based on volumetric expansion of mercury with increase in temperature. Which of the following undergoes minimum volumetric expansion for a given temperature change? Carbon-tetrachloride Mercury Methyl alcohal Water Carbon-tetrachloride Mercury Methyl alcohal Water ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Zirconia probe is used for the measurement of % O₂ in flue gas Speed of a submarine Humidity of air % CO₂ in flue gas % O₂ in flue gas Speed of a submarine Humidity of air % CO₂ in flue gas ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Which of the following relates the emf. generated in a single homogeneous wire to the temperature difference? Peltier effect Seebeck effect Thomson effect None of these Peltier effect Seebeck effect Thomson effect None of these ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Thermocouple is suitable for measuring Very low temperatures only Both high and low temperatures Liquid temperatures only Very high temperatures only Very low temperatures only Both high and low temperatures Liquid temperatures only Very high temperatures only ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation The frequency at which maximum amplitude ratio is attained is called the __________ frequency. Corner Resonant Cross-over Natural Corner Resonant Cross-over Natural ANSWER DOWNLOAD EXAMIANS APP