MDE Unit 11 oil filters Flashcards

MDE Unit 11 oil filters

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

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

Question 4:

Why is it important to regularly measure the Total Base Number (TBN) of lubricating oil on board?

B) To assess the oil’s ability to neutralize acids

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

 

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

Question 3: What happens to the larger water droplets formed in a coalescer type filter?

B) They are collected in a water separator and drained off.

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

 

B) A higher flow rate results in higher discharge frequency

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

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.

Question 5:

Which onboard test can be used to assess the viscosity of lubricating oil in a medium-speed diesel engine?

B) Viscometer test

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

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

Question 2:

What is the main purpose of using a centrifugal separator in a large medium-speed diesel engine's lubricating oil system?

B) To remove water and particulate contaminants from the oil

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

 

B) The level of contaminants in the oil

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

 

B) Ensuring proper engine warm-up before operation

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

Question 4:

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

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

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

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

 

B) Regularly monitoring and adjusting the separator’s speed

Question: Which of the following best explains the principle of operation of a plate edge (e.g., Auto-Klean) lubricating oil filter?

B) The filter uses a series of closely spaced metal plates to trap and remove solid particles from the oil as it passes through.

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

 

C) A leaking cylinder head gasket

Question 1:

Which of the following methods is commonly used on board to assess the condition of lubricating oil in a large medium-speed diesel engine?

C) Onboard testing for water content and acid number

What effect does high operational speed have on oil losses in a centrifugal separator?

B) It increases the likelihood of oil carryover

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

 

B) By allowing oil to escape through leaks

Question 3:

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

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

Why is it important to use the correct type of oil for a specific separator?

 

B) To match the oil viscosity with the separator’s operational requirements

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

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

Question 2:

What is the main component in a centrifugal lubricating oil filter that creates the necessary centrifugal force?

B) A rotating bowl or rotor

Which of the following factors influence the efficiency of a centrifugal separator in a diesel engine's lubrication system?

 

A) Rotor speed, oil temperature, viscosity of the oil, and the amount of contaminants present

Why might oil losses occur due to operational temperature issues in a separator?

B) Because high temperatures can cause oil degradation and carryover

Question 2: How does a coalescer filter separate water from distillate fuel oil?

C) By using a series of filter media that cause small water droplets to merge into larger droplets, which are then easily separated.

How can water in engine oil impact engine performance?

 

B) It can lead to engine knocking and reduced performance

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

 

B) Increased oil viscosity

Question 1:

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

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

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

 

B) Enhanced corrosion of engine parts

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

 

D) It can reduce oil flow through the engine

Question 1:

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

B) Periodically cleaning the oil using a centrifugal separator

Question 3:

How can the presence of water in the lubricating oil be detected on board a vessel?

B) By conducting a crackle test

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

 

A) By preventing oil leakage through seal and joint failures

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

 

D) The oil’s contamination level

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

 

C) Incomplete separation of contaminants

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

 

C) A damaged water pump

What is one effective method to minimize oil losses due to incomplete separation in a centrifugal separator?

 

C) Regularly cleaning and maintaining the separator

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

 

C) A leaking cylinder head gasket

Question 5:

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

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

How can temperature control contribute to minimizing oil losses in a separator?

A) By maintaining the oil within an optimal temperature range to prevent degradation

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

 

A) Different types of contaminants require a different discharge frequency

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

 

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

Question 2:

What is the purpose of conducting a blotter spot test on lubricating oil on board?

C) To detect the presence of contaminants such as soot and water

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

 

B) It can cause the oil to become foamy

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

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

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

 

B) Inadequate maintenance of the separator
1 / 49