MDE 11 Q5

1 / 16

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

B) A cracked oil pan

C) A damaged water pump

D) A failing oil pump

A) A malfunctioning turbocharger

2 / 16

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

B) A faulty fuel injector

D) Excessive oil temperature

A) Overuse of the engine’s air filter

C) A leaking cylinder head gasket

3 / 16

How does the capacity of the oil purifier affect its 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

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

4 / 16

How can water ingress through the engine’s cooling system affect the lubricating oil?

A) It can increase oil viscosity

D) It can make the oil more combustible

B) It can cause the oil to become foamy

C) It can improve oil lubrication

5 / 16

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

A) Regularly changing the air filter

D) Cleaning the fuel injectors

B) Ensuring proper engine warm-up before operation

C) Using higher-viscosity oil

6 / 16

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

A) The oil’s age

C) The oil’s viscosity

B) The oil’s color

D) The oil’s contamination level

7 / 16

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

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

A) A higher flow rate results in lower discharge frequency

8 / 16

Which of the following is a potential consequence of water contamination in engine oil on engine components?

A) Increased engine lifespan

D) Improved engine cleanliness

B) Enhanced corrosion of engine parts

C) Decreased wear on moving parts

9 / 16

Which factor primarily influences the discharge frequency of an engine lubricating oil purifier?

C) The ambient temperature around the purifier

D) The type of oil being used

A) The engine's operating speed

B) The level of contaminants in the oil

10 / 16

What problem can water in engine oil cause in terms of oil circulation?

A) It can improve oil circulation

C) It can decrease the oil pressure

B) It can lead to oil pump cavitation

D) It can reduce oil flow through the engine

11 / 16

How can condensation in the engine contribute to water contamination of the lubricating oil?

C) It occurs when the engine is not run at high enough temperatures

B) It results from improper combustion

A) It forms due to oil breakdown

D) It is caused by excessive fuel combustion

12 / 16

What is one of the primary effects of water contamination in engine oil?

D) Reduced engine temperature

B) Increased oil viscosity

C) Formation of oil sludge

A) Improved lubrication properties

13 / 16

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

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

A) It enhances the oil’s lubricating properties

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

C) It makes the oil more resistant to high temperatures

14 / 16

How can water in engine oil impact engine performance?

C) It decreases the engine’s noise level

D) It improves engine power output

B) It can lead to engine knocking and reduced performance

A) It enhances fuel efficiency

15 / 16

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

C) All contaminants cause the same discharge frequency

A) Different types of contaminants require a different discharge frequency

B) The type of contaminants does not affect discharge frequency

16 / 16

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

D) Excessive oil temperature

A) Overuse of the engine’s air filter

B) A faulty fuel injector

C) A leaking cylinder head gasket

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