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Process controls: FOURTH PERIOD

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

Boiler safety is an important part of reliable operation. Which of the strategies below would use premissives and interlocks to prevent explosions?
There a some conventional distillation column control strategies. Which of the strategies below is best described as a one that indirectly controls the heat input to the column?
There are several ways to control the pressure in a distillation column. Which of the answers below is would be the best type of pressure control for a typical distillation column?
Starting a boiler is an extremely complicated procedure. Which of the start-up steps would include the pressure in the burner valve system must be within acceptable limits?
In the distillation process there are two defined variables. Which of the variables below can be best described as the quality of the content that is exiting the column?
There are many different parts and processes to a distillation column. Which of the design feature below can be best described as the piece of equipment that liquefies the tops product?
Starting a boiler is an extremely complicated procedure. Which of the start-up steps would include excess fuel being expelled from the furnace?
There are multiple parts to a large industrial water tube boiler. Which of the answers below is best described as the area where boiler water is equalized, and scale is deposited?
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 pressure reduction from a change in the angle of the gases path across the impeller?
Which of the terms below would best describe a loop gain of 1?
Starting a boiler is an extremely complicated procedure. Which of the start-up steps would include the pressure in the burner valve system must be within acceptable limits?
Which of the terms below is best describes the measurement with the other control loop is in automatic, the disruption in the PV with a change in Co?
The feedforward compensation control is based on the transfer function of the process. Which of the answers below is one that this type of control has poor performance with a nonlinear process?
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 a chemical treatment coinciding with regular blowdowns, keeping the TDS near 0.03 ppm?
In a typical distillation process, the top stage of the column will have a ratio of lighter components to heavier components. Which of the answers below reflects this ratio best?
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?
Which of the terms below can be best described as supplies the individual devices with data and power from the trunk line in an H1 transmission system?
On a typical boiler control system, there are four main points of control. Which of the answers below would best be manipulated to control the steam drum level?
Which of the terms below is best described as the controlled value setting that is desired?
The static gains of the _______ variable and ________ variable for each loop are contained in the OLM. Choose the best answer to fill in the two blanks from the ones below.
Which of the answers below is best described as a relative gain that indicates no loop interaction?
There are numerous undertakings in developing an SIS, this is called the safety life cycle. Which of the terms below relates best to an action or event that leads to coincidental failures of two or more individual channels in a complicated channel system?
There are several ways to control the pressure in a distillation column. Which of the answers below is best described as a slow acting type of pressure control?
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%
Which of the responses below is best described as having one overshoot of the responses final value, and several oscillations that begin to settle over time??