Process Control and Instrumentation Emf developed by a thermocouple, while measuring a temperature of 600°C is about 5.5 mV. The type of thermocouple used is Platinum-platinum+rhodium Either A, B or C Iron-constantan Chromel-alumel Platinum-platinum+rhodium Either A, B or C Iron-constantan Chromel-alumel ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation __________ temperature scale assigns 0° to the 'ice point' and 80° to the 'steam point' Rankine Reumur Celcius Farenhite Rankine Reumur Celcius Farenhite ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Thermal wells are used in the temperature measurement to Increase the fidelity Guard against corrosive and oxidising action on thermocouple materials Reduce measuring lag Increase the sensitivity Increase the fidelity Guard against corrosive and oxidising action on thermocouple materials Reduce measuring lag Increase the sensitivity ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Ordinary mercury in glass thermometer is used for measuring temperature upto 120°C. However, for measuring higher temperature upto __________ °C, thermometer is made by filling nitrogen under pressure above the mercury, which stops the evaporation of mercury and reduces the chance of broken thread of mercury. 350 700 250 550 350 700 250 550 ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Dome temperature of blast furnace stove is most accurately measured by a Iron-constantan thermocouple Platinum resistance thermometer Platinum-platinum/rhodium ther-mocuple Radiation pyrometer Iron-constantan thermocouple Platinum resistance thermometer Platinum-platinum/rhodium ther-mocuple Radiation pyrometer ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Positioning controllers are used for Flow rate changes High loads Temperature changes Low loads Flow rate changes High loads Temperature changes Low loads ANSWER DOWNLOAD EXAMIANS APP