Process Control Systems – EPRI Exam with accurate detailed answers

Process Control Systems – EPRI Exam with accurate ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||




detailed answers ||\\|//||




What is the purpose of process controls? - correct answer✔✔Provide the capability to
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||




monitor and adjust specific process parameters to maintain desired values.
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||




What are the two types of automatic control for process systems? - correct
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||




answer✔✔On/off

Continuous



What are the 4 basic functions? - correct answer✔✔Measure
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||




Compare

Compute

Correct



What are the 4 classifications of hardware? - correct answer✔✔Detector
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||




Transducer

Controller

Final Control Element
||\\|//|| ||\\|//||




What is the primary element?
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||




What is the secondary element? - correct answer✔✔Sensor/Detector
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||




Transducer and Transmitter ||\\|//|| ||\\|//||

, What are the 4 most commonly measured process variables? - correct
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||




answer✔✔Temperature

Pressure

Flow Rate ||\\|//||




Level



What are the three primary types of instrumentation used to measure temperature? -
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||




correct answer✔✔Thermocouple ||\\|//||




Resistance-Temperature Detector (RTD) ||\\|//|| ||\\|//||




Filled-System



What do pressure detectors do? What are the three units? - correct answer✔✔Sense
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||




changes in pressure and convert the changes into mechanical motion or electrical signals.
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||




psi, inches mercury, or inches water
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||




What are the scales for pressure measurements? - correct answer✔✔Gauge Pressure
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||




Absolute Pressure ||\\|//||




Vacuum



What are the four primary types of instrumentation used to measure pressure? - correct
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||




answer✔✔Bourdon Tube ||\\|//||




Bellows

Capacitance Sensors ||\\|//||




Strain Gauge ||\\|//||




Differential Pressure (dP) is proportional to what? - correct answer✔✔Sqaure of the ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||




volumetric flow rate. ||\\|//|| ||\\|//||