Process Control and Instrumentation Radiation pyrometers as compared to thermocouples Can measure higher temperature Can't measure the temperature of moving objects Has a slower speed of response Is more affected by corrosive atmosphere Can measure higher temperature Can't measure the temperature of moving objects Has a slower speed of response Is more affected by corrosive atmosphere ANSWER DOWNLOAD EXAMIANS APP
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 According to Bode stability criterian, a system is unstable, if the open loop frequency response exhibits an amplitude ratio exceeding unity at frequency for which phase lag is 90° 0° 180° 45° 90° 0° 180° 45° ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation A negative gain margin expressed in decibels means a/an __________ system. Critically damped Stable Unstable None of these Critically damped Stable Unstable None of these ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Which of the following is not a composition measuring instrument? Mass spectrometer Polarograph Thermal conductivity cell Hot wire anemometer Mass spectrometer Polarograph Thermal conductivity cell Hot wire anemometer ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation In a shell and tube heat exchanger, the flow rate of heating/cooling fluid is the __________ variable. Manipulated None of these Load Controlled Manipulated None of these Load Controlled ANSWER DOWNLOAD EXAMIANS APP
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