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Process controls: FOURTH PERIOD

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

Boiler feedwater treatment is a vital component for the smooth operation of an industrial boiler. Which of the conditioning methods below is comprised of filtration and softening before entering the boiler feedwater system
Which of the systems below is best defined as being used when there is inherent interaction between loops
Using the picture below, which variable is best defined as "controlled"?
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?
There are multiple parts to a large industrial water tube boiler. Which of the answers below is best described as an exchanger that allows flue gases to heat the boiler feedwater?
There are several common problems that can arise during a distillation columns operation. Which of the problems below can be described as a lack of vapour speed to keep the liquid on the proper tray?
There are many different parts and processes to a distillation column. Which of the parts below can be best described as the design feature that allows the liquid to enter and exit the trays?
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?
Boiler safety is an important part of reliable operation. Which of the strategies below would concern itself with water carryover?
Compressors are split into general categories by how they produce downstream pressure. Which of the answers below would a centrifugal compressor be classified as?
The relative amount of heat lost in the column is reflected in the reflux ratio. If the ratio were to increase, which of the answers below would describe the effect on the light key in the distillate?
Which of the answers below best describes a disadvantage that does not belong to a manually controlled system?
There are numerous undertakings in developing an SIS, this is called the safety life cycle. Which of the terms below relates best to the management of the live SIS system, including testing and repairs?
In the reciprocating compressor system, there are numerous specialized components. Which of the components below would be best described as one that removes condensate collecting in the suction line between stages?
Which of the terms can be best described as a condition of a system or process that does not change over a period of time?
Which of the terms below is best described as the relationship of the system's output to its input?
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?
Calculate the static gain of a process that has a step change of 15% in CO₁, creating a 20% change in PV₁ and a 12% change in PV₂ while CO₂ is held constant. A step change of 12% in CO₂ creates a -15% change in PV₁ and a 7% change in PV₂?
Direct and indirect ratio control have an inherent problem that requires the addition of feedback trim. Which of the answers below best describes that issue?
The efficiency of a distillation column has a direct link to pressure control. Which of the answers below is a strategy for total condenser pressure control?
The control of the composition that is produced from a distillation column involves several variables. Which of the answers below best represents the major variable(s) that must be kept in balance?
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?
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
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?
Which of the answers below is best defined as the systems reaction to applying an input to the control system, and the time to reach steady state?