Advance your career with help from our practice exams

Process controls: FOURTH PERIOD

A randomized 25 question test from a pool of 469 questions, good luck!

Which of the answers below best describes a centralized control strategy?
Responses from feedforward controls have different times. Which of the answers below is a timed response?
SAMA has various symbols for the elements or functions of a boiler. Which of the answers below correctly identifies "D"?
There are multiple parts to a large industrial water tube boiler. Which of the answers below is best described as the volume of steam needed for use?
In a saturation process that uses static decoupling, what is the value of D₁ and D₂ if K₁₁= 14%, K₁₂=-15%, K₂₁=23% and K₂₂=12%
A system of control is needed in a centrifugal compressor to have consistent flow. Which of the constant speed compressor control systems below is best described as a restriction on the inlet flow, reducing the discharge flow?
Gasoline is a complex hydrocarbon blend. Which of the blending ratios would use the flow rates flow rate controllers on each line to create the blend ratio?
Gasoline is a complex hydrocarbon blend. Which of the rigid specifications below determines the grade of gasoline?
A system of control is needed in a reciprocating compressor to have consistent pressure. Which of the control systems below is best described as the simplest method?
Even a peak operating boiler must be protected from various issues that effect it's performance. Which of the terms below would be best be prevented by adding chemicals that cause impurities to precipitate to the mud drum?
Starting a boiler is an extremely complicated procedure. Which of the start-up steps would include lighting of the pilot when the electronic ignitor is activated?
There a some conventional distillation column control strategies. Which of the strategies below is best described as a direct setting of the columns thermal properties?
Which of the answers below best describes the "C" portion of the reaction curve?
If an unusual condition appears, compressor control systems have instruments that will shut down the compressor safely. Which of the shutdown classes below is best described as armed at the successful completion of the start sequence, and stay armed until it's timer expires?
The graph below is an example of a typical positive displacement compressor. Which of the numbered points would best be described as when the cylinder is full of gas at suction pressure?
There are numerous undertakings in developing an SIS, this is called the safety life cycle. Which of the terms below relates best to identifying the potential for harm to people, environment, and property?
The techniques employed in process systems, that have the controlled value as close to the desired value are called control strategies. Which of the strategies below is designed to counter disturbances before they can affect the controlled variable?
In relation to open loop static gain calculations the "K" in the picture below is best described by which term below?
Which answer below best describes the number "7"?
Which of the answers below is best described as a relative gain that indicates the control variable as no interaction with the manipulated variable?
Even a peak operating boiler must be protected from various issues that effect it's performance. Which of the terms below would be best be prevented by having sodium carbonates substituted with sodium sulfates as a softening agent?
Flaring gas preforms a vital safety role in refineries. Which of the control strategies is best suited for the flaring of gas?
Gasoline is a complex hydrocarbon blend. Which of the blending ratios would introduce a product to be mixed with the primary stream upstream of the first flow quantity controller?
Which answer below best represents the subscripts with the static gain symbol in the calculation of the OLM?
If an unusual condition appears, compressor control systems have instruments that will shut down the compressor safely. Which of the shutdown classes below is best described as conditions that are always monitored and alarms are armed?