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. None of these Platinum-platinum/rhodium Iron-constantan Chromel-alumel None of these Platinum-platinum/rhodium Iron-constantan Chromel-alumel 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. 350 550 700 250 350 550 700 250 ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Temperature measurement by optical pyrometer is done above __________ point, which is 1063°C. Gold Nickel Antimony Silver Gold Nickel Antimony Silver ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Continuous measurement of moisture in paper is done by High resistance Wheatstone's bridge circuit Hair-hygrometer Sling psychrometer Weighing High resistance Wheatstone's bridge circuit Hair-hygrometer Sling psychrometer Weighing ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation The time constant of a first order process with resistance R and capacitance C is 1/RC R + C RC R - C 1/RC R + C RC R - C ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Alphatron measures pressure __________ microns. < 0.1 < 3 < 1 > 3 < 0.1 < 3 < 1 > 3 ANSWER DOWNLOAD EXAMIANS APP
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