Process Control and Instrumentation Which of the following thermocouples has the widest temperature measurement range? Copper-constantan Chromel-alumel Platinum-platinum/rhodium Iron-constantan Copper-constantan Chromel-alumel Platinum-platinum/rhodium Iron-constantan ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation A proportional controller with a gain of Kc is used to control a first order process. The offset will increase, if Kc is increased Kc is reduced Derivative control action is introduced Integral control action is introduced Kc is increased Kc is reduced Derivative control action is introduced Integral control action is introduced 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. 550 700 350 250 550 700 350 250 ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Which of the following is never used as an element of industrial resistance thermometer? Lead Nickel Copper 30% iron + 70% nickel Lead Nickel Copper 30% iron + 70% nickel 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 Peltier effect Seebeck effect Thomson effect Joule heating effect Peltier effect Seebeck effect Thomson effect ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Thermal wells used in temperature measurements should have Low emissivity High transmissivity of radiation Polished surface Very thick walls Low emissivity High transmissivity of radiation Polished surface Very thick walls ANSWER DOWNLOAD EXAMIANS APP
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