MDE 11 Q7

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How can seal and joint failures contribute to oil losses in a separator?

D) By altering the oil's chemical composition

A) By increasing the oil temperature

B) By allowing oil to escape through leaks

C) By reducing the separator’s rotational speed

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Question 4: Which of the following is a key advantage of using a coalescer type filter in a distillate fuel oil system?

A) It requires no maintenance and operates indefinitely.

D) It reduces the sulfur content of the fuel.

B) It is capable of removing both solid and water contaminants simultaneously.

C) It chemically alters the fuel to improve combustion efficiency.

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How does the capacity of the oil purifier affect its discharge frequency?

A) A larger capacity purifier will have a lower discharge frequency

B) A larger capacity purifier will have a higher discharge frequency

C) The capacity of the purifier does not affect discharge frequency

D) A larger capacity purifier will not require any discharges

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Question 1:

Which of the following is the primary function of a centrifugal type lubricating oil filter in a diesel engine?

D) To cool down the lubricating oil using a cooling coil

C) To remove contaminants from the oil by using centrifugal force

B) To separate water from the oil by heating it

A) To filter out large solid particles using a mesh

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Which operational practice can help reduce oil carryover in a centrifugal separator?

D) Reducing the frequency of separator maintenance

C) Using a higher viscosity oil

B) Regularly monitoring and adjusting the separator’s speed

A) Operating the separator at a high temperature

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Question 3:

How is the condition of lubricating oil in a large medium-speed diesel engine typically monitored?

B) By regularly testing the oil's viscosity, water content, and acid number

C) By smelling the oil for unusual odors

A) By visually inspecting the oil color

D) By observing the oil pressure gauge readings

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Question: Which of the following best explains the principle of operation of a coalescer lubricating oil filter?

B) The filter uses centrifugal force to separate contaminants from the oil.

A) The filter uses a magnetic field to attract and remove ferrous particles from the oil.

D) The filter causes small droplets of water or other liquids to merge into larger droplets, which are then separated from the oil.

C) The filter uses a chemical reaction to neutralize acids in the oil.

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Which factor regarding oil condition affects the discharge frequency of a lubricating oil purifier?

A) The oil’s age

D) The oil’s contamination level

B) The oil’s color

C) The oil’s viscosity

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