Process Control and Instrumentation A constant volume gas thermometer employing __________ is used to measure sub-zero (i.e., < 0° C) temperature. Helium Nitrogen None of these Hydrogen Helium Nitrogen None of these Hydrogen ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Which of the following thermocouples is incapable of measuring sub-zero (i.e., < 0°C) temperature? Chromel-alumel Platinum-platinum + rhodium Copper-constantan Iron-constantan Chromel-alumel Platinum-platinum + rhodium Copper-constantan Iron-constantan ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Routh test Cannot be used to test the stability of a control system containing transportation lag Criterion provides information about the actual location of roots Can not determine as to how many roots of the characteristics equation have positive real roots Criterion is not applicable to systems with polynomial characteristic equation Cannot be used to test the stability of a control system containing transportation lag Criterion provides information about the actual location of roots Can not determine as to how many roots of the characteristics equation have positive real roots Criterion is not applicable to systems with polynomial characteristic equation ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation What is the dynamic error in a critically damped second order instrument for a ramp input (AT)? √AT 0.5 AT 1.5 AT 2 AT √AT 0.5 AT 1.5 AT 2 AT ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Radiation pyrometers as compared to thermocouples Can measure higher temperature Has a slower speed of response Is more affected by corrosive atmosphere Can't measure the temperature of moving objects Can measure higher temperature Has a slower speed of response Is more affected by corrosive atmosphere Can't measure the temperature of moving objects ANSWER DOWNLOAD EXAMIANS APP
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