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Process controls: FOURTH PERIOD

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

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?
SIS's use is based solely on the reduction of risk. Which of the terms below is best described as further risk reduction is impractical?
Centrifugal compressors have some specialized problems while operating. Which of the terms below is best described as the flow of gas moving to the impeller from the discharge line due to differential pressure?
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 systems below is best defined as being used when there is inherent interaction between loops
There are numerous undertakings in developing an SIS, this is called the safety life cycle. Which of the terms below relates best to the internal capacity to function properly with a small amount of faults?
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?
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?
There are numerous undertakings in developing an SIS, this is called the safety life cycle. Which of the terms below relates best to the suitability of SIS devices manufactured to meet industry standards for safety?
There are numerous undertakings in developing an SIS, this is called the safety life cycle. Which of the terms below relates best to the qualitative measuring the possibility or seriousness of a hazard?
Using the picture below, which variable is best defined as "manipulated"?
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?
Which of the terms below best describes the switching of a loop from manual to automatic, resulting in a change in the control loop static gain?
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?
Which of the control systems below is designed to uses the static gain and dynamic portions of the transfer functions?
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 having no time limits, and armed when the process is in operating limits, and
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?
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 the proper air-to-fuel ratios for varying boiler demands?
Calculate the RGM of a process with the following static gains: K₁₁=1.33, K₁₂=-1.25, K₂₁=0.8, K₂₂=0.58.Ꙡ₂₂Ꙡ₁₁Ꙡ₁₂Ꙡ₂₁
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?
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?
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?
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?
The breakdown of any one of the components of a SIF is hazardous. Which of the components below are the most prone to breakdown?