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 a some conventional distillation column control strategies. Which of the strategies below is best described as a one that does not control output flows from the column?
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?
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?
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
Which of the control terms below is best described as multiple controlled variables are affected by a single manipulated variable?
Which of the answers below is best described as a relative gain that indicates the control variable as no interaction with the manipulated variable?
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?
Which of the answers below best describes the "A" portion of the reaction curve?
Boiler safety is an important part of reliable operation. Which of the strategies below would use premissives and interlocks to prevent explosions?
Feedforward control strategies are developed from different sources. Which of the strategies below is derived equations that involve energy or mass balance equations?
All process responses to a load change involve two distinct parts. Which of the answers below best represents those two parts?
In an industrial application, there are systems where two or more boilers supply a main header. Which of the terms below would best describe the main steam header pressure controller?
There are multiple parts to a large industrial water tube boiler. Which of the answers below is best described as a tube not directly heated, that allows thermal movement of water to the mud drum?
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
There are a variety of complications that can arise while using a reciprocating compressor. Which one of the events would be mitigated by a flow transmitters sending a signal to a low lube oil flow alarm?
Responses from feedforward controls have different times. Which of the answers below is a timed response?
Whic of the responses below can be best described as extremely stable, with no overshoot, but slower than critically damped response?
In relation to open loop static gain calculations the "A" in the picture below is best described by which term below?
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 armed at the successful completion of the start sequence, and stay armed until it's timer expires?
In a reciprocating compressor, the piston rod is put under extreme forces and requires monitoring. Which of the situations below would monitor the temperature of the crosshead pin?
The direct ratio scheme calculates it's ratio using a flow relay. Which of the methods below does the flow relay use?
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?
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 pressure of the furnace?
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
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?