Process Control and Instrumentation Starting temperature of optical radiation pyrometer is __________ °C. 1200 800 400 1500 1200 800 400 1500 ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Dome temperature of blast furnace stove is most accurately measured by a Radiation pyrometer Platinum resistance thermometer Iron-constantan thermocouple Platinum-platinum/rhodium ther-mocuple Radiation pyrometer Platinum resistance thermometer Iron-constantan thermocouple Platinum-platinum/rhodium ther-mocuple ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Which of the following thermocouples can measure the maximum temperature? Tungsten-molybdenum Chromel-alumel Platinum-rhodium Iron-constantan Tungsten-molybdenum Chromel-alumel Platinum-rhodium Iron-constantan ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Normal mercury thermometer can be used to measure a temperature of about 300°C. However, its maximum temperature measurement range can be increased upto about 500°C by Using steel tube in place of glass tube Increasing the diameter of the tube Accounting for the tube expansion Filling nitrogen under pressure in the stem Using steel tube in place of glass tube Increasing the diameter of the tube Accounting for the tube expansion Filling nitrogen under pressure in the stem ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Which of the following relates the absorption & evolution of heat at the junctions of a thermocouple to the current flow in the circuit? Joule heating effect Thomson effect Peltier effect Seebeck effect Joule heating effect Thomson effect Peltier effect Seebeck effect 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 Conductor Insulator Solid semi-conductor Liquid semi-conductor Conductor Insulator Solid semi-conductor Liquid semi-conductor ANSWER DOWNLOAD EXAMIANS APP
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