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Process controls: FOURTH PERIOD

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

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 volume of boiler feedwater sprayed in to the steam?
Which of the terms below is best described as predictive to any system response to an input?
In relation to open loop static gain calculations the "A" in the picture below is best described by which term below?
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 control terms below is best described as multiple controlled variables are affected by a single manipulated variable?
Responses from feedforward controls have different times. Which of the answers below is not a timed response?
Which answer below best describes the number "3"?
Full range duplex control of a heating control uses two or more FCEs. If a system uses a FO valve and a FC valve, what are the valves positions at 34% of the controller signal?
Which of the answers below best represents the PB if the controller gain is 1.75?
This additional control scheme can be added to a parallel metering cross-limited control system. Which of the answers best describes this extra control system that has all signals in percentages?
Boiler safety is an important part of reliable operation. Which of the strategies below would concern itself with maintaining proper furnace pressures?
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?
There are several ways to control the pressure in a distillation column. Which of the answers below is best described as the control of the condensers coolant flow?
which of the terms below can be described as a force exerted by the gas or vapor released by a liquid or solid substance in a closed container or space.
Whic of the responses below can be best described as extremely stable, with no overshoot, but slower than critically damped response?
which of the terms below can be described as a force exerted by the gas or vapor released by a liquid or solid substance in a closed container or space.
Which of the systems below is best defined as being used when there is inherent interaction between loops
Which answer below best describes the number "10"?
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?
There are a variety of complications that can arise while using a reciprocating compressor. Which one of the events would be mitigated by a tight control of the water jacket and lube oil?
There are a variety of complications that can arise while using a reciprocating compressor. Which one of the events would be mitigated by a the proper positioning of proximity probes?
There are several ways to control the pressure in a distillation column. Which of the answers below is would be the best type of pressure control for a typical distillation column?
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?
In the reciprocating compressor system, there are numerous specialized components. Which of the components below would be best described as one that increases the pressure in the compressor for start-up?
Gasoline is a complex hydrocarbon blend. Which of the blending ratios would use a pace controller to set the RSP for all of the lines being blended?