Process Control and Instrumentation The __________ of the fluid contained in the temperature sensing element (i.e., bulb) of filled system thermometers changes with change in temperature. Viscosity All of these Pressure Volume Viscosity All of these Pressure Volume ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation A first order system with unity gain and time constant τ is subjected to a sinusoidal input of frequency w = 1/τ. The amplitude ratio for this system is 0.5 0.25 1 1/√2 0.5 0.25 1 1/√2 ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation On-off controllers are normally used for None of these Low loads Flow rate changes Temperature changes None of these Low loads Flow rate changes Temperature changes ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Which of the following shows maximum dip effect (indicating reverse direction of temperature change)? Radiation pyrometer Bimetallic thermometer Mercury thermometer Thermocouple Radiation pyrometer Bimetallic thermometer Mercury thermometer Thermocouple 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 Bode stability Nyquist Routh stability None of these Bode stability Nyquist Routh stability 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? Chromel-constantan Iron-constantan Platinum-platinum + rhodium All of these Chromel-constantan Iron-constantan Platinum-platinum + rhodium All of these ANSWER DOWNLOAD EXAMIANS APP
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