Process Control and Instrumentation Which of the following thermocouples is the most suitable for measuring a temperature of about 1600°C in an oxidizing atmosphere? Chromel-alumel Copper-constantan Iron-constantan Platinum-platinum + rhodium Chromel-alumel Copper-constantan Iron-constantan Platinum-platinum + rhodium ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Pick out the one which is a first order instrument. Mercury in glass thermometer (without any covering or air gap) Bare metallic thermometer Bare vapor pressure thermometer All of these Mercury in glass thermometer (without any covering or air gap) Bare metallic thermometer Bare vapor pressure thermometer All of these ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation In a shell and tube heat exchanger, the inlet temperature of heating/cooling fluid is the __________ variable. Manipulated None of these Controlled Load Manipulated None of these Controlled Load ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation In second order underdamped system, Large damping co-efficient means smaller damping Decay ratio = overshoot Overshoot increases for increasing damping co-efficient Decay ratio = (overshoot)² Large damping co-efficient means smaller damping Decay ratio = overshoot Overshoot increases for increasing damping co-efficient Decay ratio = (overshoot)² ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Dead zone is the None of these Same as time constant Maximum change in the variable that does not change the reading of the instrument Same as transportation lag None of these Same as time constant Maximum change in the variable that does not change the reading of the instrument Same as transportation lag ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation A mercury thermometer can not be used to measure the temperature below the freezing point of mercury, which is __________ °C. -11.9 -60.9 -38.9 -80.9 -11.9 -60.9 -38.9 -80.9 ANSWER DOWNLOAD EXAMIANS APP
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