Process Control and Instrumentation All the thermocouples used for temperature measurement use dissimilar metal Beads Wires Bars Strips Beads Wires Bars Strips ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Which of the following thermocouples will give the highest output for the same value of hot and cold junction temperature? Chromel-constantan Iron-constantan Platinum-platinum + rhodium All of these Chromel-constantan Iron-constantan Platinum-platinum + rhodium All of these ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation The time constant of a unity gain, first order plus time delay process is 5 min. If the phase lag at a frequency of 0.2 rad/min is 60°, then the dead time (in minutes) is π/6 5π/12 π/3 π/12 π/6 5π/12 π/3 π/12 ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Which of the following is never used as an element of industrial resistance thermometer? Copper 30% iron + 70% nickel Lead Nickel Copper 30% iron + 70% nickel Lead Nickel ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation To increase the speed of response of a pressure spring liquid or gas expansion thermometer, the clearance space between the thermometer bulb and the thermal well should not be filled with Air A metal powder or graphite Oil Mercury Air A metal powder or graphite Oil Mercury ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Mercury thermometer is commonly used for low temperature measruement. The freezing point and boiling point of mercury are respectively __________ °C. - 39 and 350 - 79 and 395 - 51 and 439 - 10 and 425 - 39 and 350 - 79 and 395 - 51 and 439 - 10 and 425 ANSWER DOWNLOAD EXAMIANS APP
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