MDE 11 End of Unit Quiz

MDE 11 End Of Unit Quiz

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Question 5:

What happens to the clean oil after it passes through a centrifugal lubricating oil filter?

D) It is sent to a secondary filtration system

C) It is discarded and replaced with new oil

A) It is returned directly to the engine's lubrication system

B) It is mixed with fresh oil before being reused

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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

A) To filter out large solid particles using a mesh

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

B) To separate water from the oil by heating it

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What role does the oil flow rate play in determining the discharge frequency of a lubricating oil purifier?

A) A higher flow rate results in lower discharge frequency

C) The flow rate has no impact on discharge frequency

D) The flow rate affects the type of contaminants collected

B) A higher flow rate results in higher discharge frequency

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Which of the following is a common cause of water contamination in diesel engine lubricating oil?

A) Overuse of the engine’s air filter

C) A leaking cylinder head gasket

D) Excessive oil temperature

B) A faulty fuel injector

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Which operational issue can result in oil carryover in a centrifugal separator?

B) Inadequate maintenance of the separator

C) Low oil temperature

D) Correctly adjusted separator settings

A) High oil pressure

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

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

D) A larger capacity purifier will not require any discharges

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

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

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

A) By increasing the oil temperature

D) By altering the oil's chemical composition

C) By reducing the separator’s rotational speed

B) By allowing oil to escape through leaks

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Question 1: What is the primary function of a coalescer type distillate fuel oil filter?

D) To absorb and neutralize sulfur compounds in the fuel.

A) To chemically treat the fuel to prevent oxidation.

C) To use centrifugal force to remove solid contaminants from the fuel.

B) To separate water from fuel by causing small water droplets to combine into larger droplets.

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Question 1:

Which of the following practices is essential to maintain the lubricating oil in optimum condition in a large medium-speed diesel engine?

A) Regularly changing the oil with fresh oil

D) Increasing the engine's operating temperature

B) Periodically cleaning the oil using a centrifugal separator

C) Allowing the oil to settle in the sump for long periods

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

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

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

C) The filter utilizes a series of mesh screens to trap and remove particles from the oil.

D) The filter heats the oil to evaporate water and other contaminants.

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Question 4:

Which of the following best describes the process by which a centrifugal filter operates?

B) Oil is heated to evaporate water content

A) Oil is passed through a fine mesh to trap solid particles

C) Oil is spun at high speed to separate contaminants based on density

D) Oil is passed through a chemical treatment to neutralize acids

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What maintenance practice can help prevent water contamination in the engine lubricating oil?

A) Regularly changing the air filter

D) Cleaning the fuel injectors

C) Using higher-viscosity oil

B) Ensuring proper engine warm-up before operation

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