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?
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?
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?
Which of the terms below is best describes when the other control loop is in manual, the disruption in the PV with a change in Co?
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?
Which of the answers below represents the phase shift of a processes natural frequency?
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.
There are multiple parts to a large industrial water tube boiler. Which of the answers below is best described as an area where the temperature of the superheated steam is controlled with boiler feedwater?
Certain typesof dynamic compressors need specialized components. Which of the components below would be required for a multistage centrifugal compressor?
In a reciprocating compressor, the piston rod is put under extreme forces and requires monitoring. Which of the situations below would use mounted strain gauges?
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 adjust the compression rate of the compressor?
Which of the terms below is best describes when the other control loop is in manual, the disruption in the PV with a change in Co?
Which answer below best describes the number "2"?
Even a peak operating boiler must be protected from various issues that effect it's performance. Which of the terms below would be best be prevented by adding chemicals that cause impurities to precipitate to the mud drum?
Which of the answers below is best described as a relative gain that indicates no loop interaction?
The direct ratio scheme calculates it's ratio using a flow relay. Which of the methods below does the flow relay use?
One of the more common applications for ratio control is fuel to air control schemes. Which of the control schemes below would use a firing demand controller whose signal would arrive at the air controller only?
In the distillation process heat is one of the most important variables to control. Which of the answers below would best describe the effects of an increase in heat production?
Which answer below best represents the subscripts with the static gain symbol in the calculation of the OLM?
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?
Which of the answers below is best described as having built-in feedback characteristics that cause the process to tend towards equilibrium.
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%
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?
Which of the control systems below is designed to uses the static gain of the transfer functions only?
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?