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Process controls: FOURTH PERIOD

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

SIS's use is based solely on the reduction of risk. Which of the terms below is best described as unjustifiable risk?
Gasoline is a complex hydrocarbon blend. Which of the rigid specifications below determines the volatility of gasoline?
with dynamic feedforward compensation, if the disturbance dead time is _____ than the process dead time, the dead time parameter is ______. Use the answers below to choose the one that fills in both blanks best.
Gasoline is a complex hydrocarbon blend. Which of the rigid specifications below determines the grade of gasoline?
There a some conventional distillation column control strategies. Which of the strategies below is best described as a one that does not control output flows from the column?
SAMA has various symbols for the elements or functions of a boiler. Which of the answers below correctly identifies "E"?
In the reciprocating compressor system, there are numerous specialized components. Which of the components below would be best described as one that isolates the compressor during emergency conditions?
Baseband NRZ signalling is the standard for all physical connections with Ethernet. Which of the signalling methods below has the advantage of an embedded clock signal?
Which of the control terms below is best described as multiple controlled variables are affected by a single manipulated variable?
A system of control is needed in a centrifugal compressor to have consistent flow. Which of the variable speed compressor control systems below is best described as a cascade system from the discharge, through a controller, to the motor?
There are several common problems that can arise during a distillation columns operation. Which of the problems below can be described as when the vapour avoids the upper tray due to a lack of a seal in the downcomer from the tray above?
Which of the answers below is best described as a relative gain that indicates no loop interaction?
A system of control is needed in a reciprocating compressor to have consistent pressure. Which of the control systems below is best described as one that adjust the compression rate of the compressor?
There are many different parts and processes to a distillation column. Which of the processes below can be best described as the design feature that removes some of the liquids lighter components at each stage?
Gasoline is a complex hydrocarbon blend. Which of the blending ratios would use quantity controllers and pulse flowmeters on each stream to create the blend ratio?
In an industrial application, there are systems where two or more boilers supply a main header. Which of the terms below would best describe the main steam header pressure controller?
Full range duplex control of a heating control uses two or more FCEs. If a system uses a FO valve and a FC valve, what are the valves positions at 34% of the controller signal?
Boiler feedwater treatment is a vital component for the smooth operation of an industrial boiler. Which of the conditioning methods below is comprised of Mechanically removing gases from the feedwater?
Control strategies affect several variables, some at the same time. Which of the variables below is omitted from the pure feedforward control strategy?
Surge is the worst conditions that a centrifugal compressor can have, so some control strategies have been developed to mitigate this. Which of the strategies below can be described as a control that functions despite the surge controller not operating?
Boiler safety is an important part of reliable operation. Which of the strategies below would concern itself with maintaining proper furnace pressures?
Responses from feedforward controls have different times. Which of the answers below is a timed response?
Which of the answers below best describes a advantage that does not belong to a automatic feedback controlled system?
Which of the terms below is best described as the relationship of the system's output to its input?
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 monitoring only those conditions that apply to start-up?