MDE 11 Q4

1 / 11

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

D) It has no impact on oil losses

A) It decreases the efficiency of oil separation

B) It increases the likelihood of oil carryover

C) It improves the separation of contaminants

2 / 11

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

C) By increasing the pressure in the separator

A) By preventing oil leakage through seal and joint failures

D) By altering the oil’s chemical properties

B) By lowering the temperature of the oil

3 / 11

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

A) Operating the separator at a high temperature

B) Regularly monitoring and adjusting the separator’s speed

C) Using a higher viscosity oil

D) Reducing the frequency of separator maintenance

4 / 11

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

B) By increasing the operational temperature to improve separation

C) By cooling the oil to reduce its viscosity significantly

D) By making the oil more acidic to enhance separation

5 / 11

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

B) Excessive oil viscosity

C) Incomplete separation of contaminants

A) Overheating of the separator

D) Incorrect oil type used

6 / 11

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

A) High oil pressure

D) Correctly adjusted separator settings

B) Inadequate maintenance of the separator

C) Low oil temperature

7 / 11

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

D) By altering the oil's chemical composition

C) By reducing the separator’s rotational speed

A) By increasing the oil temperature

B) By allowing oil to escape through leaks

8 / 11

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

D) To make the oil more prone to contamination

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

A) To ensure the oil does not degrade the separator material

C) To reduce the oil’s flash point

9 / 11

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

D) Because operational temperatures do not affect the separator’s performance

A) Because oil becomes too dense and clogs the separator

B) Because high temperatures can cause oil degradation and carryover

C) Because low temperatures increase oil viscosity too much

10 / 11

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

C) The age of the oil, the type of fuel used, ambient air temperature, and the size of the engine

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

B) The type of oil used, the color of the oil, the engine's RPM, and the size of the fuel injectors

D) The amount of water in the oil, the presence of fuel additives, the engine's cooling system, and the oil's pH level

11 / 11

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

B) Increasing the oil temperature

A) Reducing the separator’s rotational speed

C) Regularly cleaning and maintaining the separator

D) Using a different type of oil

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