Process Control and Instrumentation Thermal wells used in temperature measurements should have Low emissivity Very thick walls High transmissivity of radiation Polished surface Low emissivity Very thick walls High transmissivity of radiation Polished surface ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Zirconia probe is used for the measurement of 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 % O₂ in flue gas ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Reference points i.e., ice point and steam point in Reaumer temperature scale are respectively 32° & 460° 0° & 80° 32° & 80° - 273° & 80° 32° & 460° 0° & 80° 32° & 80° - 273° & 80° ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation The temperature of tempering oil baths maintained at 400°C during heat treatment of steel is measured by a/an __________ thermocouple. Chromel-alumel Iron-constantan Platinum-platinum/rhodium None of these Chromel-alumel Iron-constantan Platinum-platinum/rhodium None of these ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Platinum resistance thermometer can be used upto antimony point which is __________ °C, and is the temperature of equilibrium between solid antimony & liquid antimony at normal atmospheric pressure. 961.93 1261.93 1064.43 630.74 961.93 1261.93 1064.43 630.74 ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation For measuring the temperature of a red hot furnace, which is the most suitable instrument? Platinum resistance thermometer Optical pyrometer Thermocouple Bimetallic thermometer Platinum resistance thermometer Optical pyrometer Thermocouple Bimetallic thermometer ANSWER DOWNLOAD EXAMIANS APP
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