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!

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?
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?
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?
Which answer below best describes the number "2"?
There are many different parts and processes to a distillation column. Which of the design feature below can be best described as the generation of heat to the column?
Boiler safety is an important part of reliable operation. Which of the strategies below would concern itself with maintaining proper furnace pressures?
There are numerous undertakings in developing an SIS, this is called the safety life cycle. Which of the terms below relates best to the SIL required to satisfy an RRF of 87345?
All feedforward control strategies respond to a disturbance before it reaches the CV. Which of the strategies below does not verify that the CV has returned to the desired value
Because steam demands can vary, there are several control methods that work in concert to ensure efficient boiler operation. Which of those strategies would be to control the water level in the steam drum?
The direct ratio scheme calculates it's ratio using a flow relay. Which of the methods below does the flow relay use?
Which of the answers below best describes the "C" portion of the reaction curve?
Which of the answers below is best described as a relative gain that indicates no loop interaction?
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?
One of the more common applications for ratio control is fuel to air control schemes. Which of the control schemes below would use a firing demand controller whose signal would arrive at the air controller only?
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 the pH of a boiler system being maintained at 10.5-11.5?
Electric switches and transmitters make up the bulk of the sensors in a safety system. Which type of sensor architecture below is best described as a two component fault indicating components that can initiate a shut down together?
Which of the terms below is best described as a feedback signal that relates to the measurement of the CV
SAMA has various symbols for the elements or functions of a boiler. Which of the answers below correctly identifies "E"?
Which of the answers below is best described as the quantitative measurement of best controlled and manipulated variable pairings to limit 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 the ratio of detected failure rates in a device or system?
There are many different parts and processes to a distillation column. Which of the design feature below can be best described as the process of condensed tops reintroduced to the column?
Which answer below best describes the number "1"?
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 matching of steam supply with the demand?
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 control systems below is designed to uses the static gain and dynamic portions of the transfer functions?