Process Control and Instrumentation Thermal wells used in temperature measurements should have Polished surface Low emissivity High transmissivity of radiation Very thick walls Polished surface Low emissivity High transmissivity of radiation Very thick walls ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Radiation pyrometers as compared to thermocouples Has a slower speed of response Can measure higher temperature Is more affected by corrosive atmosphere Can't measure the temperature of moving objects Has a slower speed of response Can measure higher temperature Is more affected by corrosive atmosphere Can't measure the temperature of moving objects ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Which of the following can not measure a temperature of 1600°C ? Thermocouple Platinum resistance thermometer Radiation pyrometer Photo-electric pyrometer Thermocouple Platinum resistance thermometer Radiation pyrometer Photo-electric pyrometer ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Zirconia probe is used for the measurement of % O₂ in flue gas % CO₂ in flue gas Humidity of air Speed of a submarine % O₂ in flue gas % CO₂ in flue gas Humidity of air Speed of a submarine ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Thermal conductivity based continuous flue gas analyser makes use of varying thermal conductivity of the constituents of flue gases. Which of the following constituents of flue gases has the maximum thermal conductivity? CO O₂ CO₂ N₂ CO O₂ CO₂ N₂ ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation A mercury thermometer can not be used to measure the temperature below the freezing point of mercury, which is __________ °C. -38.9 -80.9 -11.9 -60.9 -38.9 -80.9 -11.9 -60.9 ANSWER DOWNLOAD EXAMIANS APP
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