Process Control and Instrumentation Which of the following is not a mechanical pressure sensing element? Bellows Bourdon tube U-tube Diaphragm Bellows Bourdon tube U-tube Diaphragm ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Which of the following thermocouple materials does not contain nickel? None of these Alumel Constantan Chromel None of these Alumel Constantan Chromel ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation A mercury thermometer can not be used to measure the temperature below the freezing point of mercury, which is __________ °C. -38.9 -11.9 -60.9 -80.9 -38.9 -11.9 -60.9 -80.9 ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation In a closed loop system, the process to be controlled is an integrating process with transfer function l/2s. The controller proposed to be used in an integral controller with transfer function 1/T₁s. When a step change in set point is applied to such a closed loop system, the controlled variable will exhibit Unstable response Undamped response Underdamped response Overdamped response Unstable response Undamped response Underdamped response Overdamped response ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Time constant is the Time taken by the controlled variable to reach 63.2% of its full change Same as transportation lag Same as dead time Time required by the measured variable to reach 63.2% of its ultimate change Time taken by the controlled variable to reach 63.2% of its full change Same as transportation lag Same as dead time Time required by the measured variable to reach 63.2% of its ultimate change ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Which of the following is a desirable characteristic of an instrument? High measuring lag High drift Poor reproducibility High fidelity High measuring lag High drift Poor reproducibility High fidelity ANSWER DOWNLOAD EXAMIANS APP
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