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Process controls: FOURTH PERIOD

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

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 changes the compressors capacity?
Control strategies affect several variables, some at the same time. Which of the variables below is omitted from the pure feedforward control strategy?
A calculated value, derived from the mathematical model of the process, of the manipulated variable is applied to the feedback controller ouput signal to the FCE. Which of the answers below would use this type of strategies?
Which of the answers below is not a damped response? Choose the best answer from those below
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?
Which of the control terms below is best described as multiple controlled variables are affected by a single manipulated variable?
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?
There are numerous undertakings in developing an SIS, this is called the safety life cycle. Which of the terms below relates best to the intermittent testing to verify operation of SIS devices?
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 shutdown that can be initiated by a single component?
A measured disturbance by a transmitter, whose output signal modifies the feedforward controller output signal to the FCE is used by which of the control strategies below?
There are several common problems that can arise during a distillation columns operation. Which of the problems below can be described as an accumulation of liquid that can block vapour from rising?
There a some conventional distillation column control strategies. Which of the strategies below is an example of an energy balance strategy?
Centrifugal compressors have some specialized problems while operating. Which of the terms below is best described as the operation at a high flow rate but low discharge rate?
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 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?
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 a a wide variety of processes in any plant. Which of the processes use condensation and vapourization to separate the individual components of a liquid mixture?
Starting a boiler is an extremely complicated procedure. Which of the start-up steps would include the pressure for the igniter system being acceptable limits?
There are a variety of complications that can arise while using a reciprocating compressor. Which one of the events would be mitigated by a gauge on the suction and discharge lines?
Which of the answers below is best represented by the number "3" on a typical H1 segment?
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?
Starting a boiler is an extremely complicated procedure. Which of the start-up steps would include excess fuel being expelled from the furnace?
In a reciprocating compressor, the piston rod is put under extreme forces and requires monitoring. Which of the situations below would a pneumatic eutectic sensor be used?
There a some conventional distillation column control strategies. Which of the strategies below is an example of an energy balance strategy?
Which of the terms below is best described as a process response to a load disturbance that moves in one direction until the limitations of physical equipment is met or exceeded?