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? Peltier effect Joule heating effect Seebeck effect Thomson effect Peltier effect Joule heating effect Seebeck effect Thomson effect 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? Platinum-platinum + rhodium Iron-constantan All of these Chromel-constantan Platinum-platinum + rhodium Iron-constantan All of these Chromel-constantan ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation For measuring the temperature of a red hot furnace, which is the most suitable instrument? Bimetallic thermometer Thermocouple Platinum resistance thermometer Optical pyrometer Bimetallic thermometer Thermocouple Platinum resistance thermometer Optical pyrometer ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Bode diagram is a plot of Log (AR) vs. f and log Φ vs.f None of these AR vs. log (f) and Φ vs. log (f) Log (AR) vs. log (f) and (Φ) vs. log (f) Log (AR) vs. f and log Φ vs.f None of these AR vs. log (f) and Φ vs. log (f) Log (AR) vs. log (f) and (Φ) vs. log (f) ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Temperature measurement range of iron-constantan thermocouple is 0 to 870°C. It can be used to measure sub zero temperature, because at lower temperature Emf produced is very low of the order of microvolt Rusting of iron takes place Both B and C Here Embrittlement of iron occurs Emf produced is very low of the order of microvolt Rusting of iron takes place Both B and C Here Embrittlement of iron occurs ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Pyrometry refers to the measurement of temperature Which is of higher magnitude Directly All of these With the mercurial thermometer upto 350°C Which is of higher magnitude Directly All of these With the mercurial thermometer upto 350°C ANSWER DOWNLOAD EXAMIANS APP
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