A randomized 25 question test from a pool of 469 questions, good luck!
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 restriction on the inlet flow, reducing the discharge flow?
Which answer below best describes the number "1"?
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?
Control strategies affect several variables, some at the same time. Which of the variables below is omitted from the pure feedforward control strategy?
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 supplied steam pressure?
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?
There are numerous undertakings in developing an SIS, this is called the safety life cycle. Which of the terms below relates best to the installation of a SIS in accordance with the design requirements?
Certain typesof dynamic compressors need specialized components. Which of the components below would be required for a multistage centrifugal compressor?
In the reciprocating compressor system, there are numerous specialized components. Which of the components below would be best described as one that safeguards against over pressurization?
Which of the terms below would best describe a loop gain of 1?
In regard to the distillation process, Which of the terms below is best described as the The liquid and/or gas entering into the distillation column?
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?
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?
When tuning with out decoupling, the _______ step is to tune the faster loops, the _______ step is to tune the most important loop. Choose the answer below that best fills in both blanks.
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?
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?
There are multiple parts to a large industrial water tube boiler. Which of the answers below is best described as the boiler manufacturers feedwater specifications are met?
Which of the answers below is best described as a relative gain that indicates the control variable as no interaction with the manipulated variable?
The static gains of the _______ variable and ________ variable for each loop are contained in the OLM. Choose the best answer to fill in the two blanks from the ones below.
Which answer below best represents the subscripts with the static gain symbol in the calculation of the OLM?
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 having sodium carbonates substituted with sodium sulfates as a softening agent?
Which answer below best represents the subscripts with the static gain symbol in the calculation of the OLM?
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 conditions that are always monitored and alarms are armed?
The graph below is an example of a typical positive displacement compressor. Which of the numbered points would best be described as when the cylinder is full of gas at suction pressure?
Compressors are split into general categories by how they produce downstream pressure. Which of the answers below would a centrifugal compressor be classified as?