MEK Exit Exam • Set 3 Question 29 of 30

The purpose of Lubricating Oil in a Diesel engine is to _______

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Direct Answer

Option D: Reduces friction

Lubricating oil plays a crucial role in a diesel engine by reducing friction between moving parts. This minimizes wear, dissipates heat, and prevents seizing, thereby ensuring efficient and prolonged engine operation.

All Options

Gives power

Turns turbo charger

Increases air supply

Reduces friction (Correct Answer)

Detailed Explanation & Context

Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Marine Engineering Knowledge (MEK).

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