Process Control and Instrumentation Thermisters which have a very high temperature co-efficient of resistivity belong to the class of solid called Semi conductors Conductors Insulators Dielectrics Semi conductors Conductors Insulators Dielectrics ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Thermal wells used in temperature measurements should have Low emissivity Polished surface High transmissivity of radiation Very thick walls Low emissivity Polished surface High transmissivity of radiation Very thick walls ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Small furnace draught is accurately measured by an inclined tube manometer, in which the manometric liquid used most commonly is Water Paraffin Ethylene glycol Carbon tetrachloride Water Paraffin Ethylene glycol Carbon tetrachloride ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation With increase in temperature, the electrical conductivity of the platinum used in the resistance thermometer Increases exponentially Increases Decreases Remains constant Increases exponentially Increases Decreases Remains constant ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation The level of a liquid under pressure can be determined using Air-trap system Differential pressure manometer Diaphragm box system Bubbler system Air-trap system Differential pressure manometer Diaphragm box system Bubbler system ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Which of the following thermocouples can measure the maximum temperature? Iron-constantan Platinum-rhodium Chromel-alumel Tungsten-molybdenum Iron-constantan Platinum-rhodium Chromel-alumel Tungsten-molybdenum ANSWER DOWNLOAD EXAMIANS APP