Process Control and Instrumentation Thermal wells are used in the temperature measurement to Increase the fidelity Increase the sensitivity Guard against corrosive and oxidising action on thermocouple materials Reduce measuring lag Increase the fidelity Increase the sensitivity Guard against corrosive and oxidising action on thermocouple materials Reduce measuring lag ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation __________ is undesirable in thermocouples used in industries, Oxidation resistance Linear relation of emf to temperature Non-linear relation of emf to temperature Corrosion resistance Oxidation resistance Linear relation of emf to temperature Non-linear relation of emf to temperature Corrosion resistance 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? All of these Iron-constantan Platinum-platinum + rhodium Chromel-constantan All of these Iron-constantan Platinum-platinum + rhodium Chromel-constantan ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Smoke density of the flue gas going out of the chimney is measured by a Thermal conductivity meter Photo electric cell Polarograph Chromatograph Thermal conductivity meter Photo electric cell Polarograph Chromatograph ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation A control system is unstable, if the open loop frequency response exhibits an amplitude ratio exceeding unity at the crossover frequency. This is __________ criterion. None of these Nyquist Bode stability Routh stability None of these Nyquist Bode stability Routh stability ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation In a shell and tube heat exchanger, the outlet temperature of heating/cooling fluid is the __________ variable. None of these Manipulated Load Controlled None of these Manipulated Load Controlled ANSWER DOWNLOAD EXAMIANS APP
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