MDE 11 End of Unit Quiz

MDE 11 End Of Unit Quiz

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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.

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

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

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Question 4:

Which of the following actions can prevent the deterioration of lubricating oil in a large medium-speed diesel engine?

B) Regularly replacing the oil filters

A) Using a low-quality oil

C) Allowing the engine to run with contaminated oil

D) Reducing the engine’s load

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

D) A larger capacity purifier will not require any discharges

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

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

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

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Which component failure is likely to introduce water into the engine lubricating oil?

D) A failing oil pump

C) A damaged water pump

A) A malfunctioning turbocharger

B) A cracked oil pan

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

D) The oil’s contamination level

B) The oil’s color

C) The oil’s viscosity

A) The oil’s age

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How can ensuring proper sealing and joint integrity help in minimizing oil losses in a separator?

B) By lowering the temperature of the oil

C) By increasing the pressure in the separator

D) By altering the oil’s chemical properties

A) By preventing oil leakage through seal and joint failures

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How does water in engine oil affect the oil's lubricating properties?

B) It causes the oil to lose its ability to lubricate effectively

A) It enhances the oil’s lubricating properties

D) It improves the oil’s ability to clean engine parts

C) It makes the oil more resistant to high temperatures

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How does the type of contaminants in the oil influence the discharge frequency of the purifier?

D) The type of contaminants only affects the purifier's operational speed

A) Different types of contaminants require a different discharge frequency

C) All contaminants cause the same discharge frequency

B) The type of contaminants does not affect discharge frequency

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

B) Inadequate maintenance of the separator

D) Correctly adjusted separator settings

C) Low oil temperature

A) High oil pressure

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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

B) It is mixed with fresh oil before being reused

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

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Question 3:

In a centrifugal type lubricating oil filter, how are the contaminants typically collected and separated from the oil?

D) They are filtered through a paper element

B) They are collected on the inner wall of the rotating bowl

A) They are trapped in a mesh screen

C) They are dissolved in the oil and carried away

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What is a common cause of oil losses in a centrifugal separator?

A) Overheating of the separator

C) Incomplete separation of contaminants

D) Incorrect oil type used

B) Excessive oil viscosity

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