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. Bode stability Nyquist Routh stability None of these Bode stability Nyquist Routh stability None of these 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. None of these Load Controlled Manipulated None of these Load Controlled Manipulated ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Photoelectric pyrometers are suitable in the temperature range of __________ °C. 800-2500 400-1000 800-1600 400-1600 800-2500 400-1000 800-1600 400-1600 ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Which of the following is not a variable area flow meter? Magnetic flow meter Rotameter Piston type meter Orifice and tapered plug meter Magnetic flow meter Rotameter Piston type meter Orifice and tapered plug meter ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Which of the following thermocouples has the least temperature measurement range? Chromel-alumel Iron-constantan Platinum-platinum/rhodium Copper-constantan Chromel-alumel Iron-constantan Platinum-platinum/rhodium Copper-constantan ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Which of the following temperature measuring instruments need not touch the object whose temperature is being measured? Thermo electric pyrometer Mercury in glass thermometer Radiation/infrared pyrometer Filled system thermometer Thermo electric pyrometer Mercury in glass thermometer Radiation/infrared pyrometer Filled system thermometer ANSWER DOWNLOAD EXAMIANS APP
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