Question 1 of 30
The purpose of Lubricating Oil in a Diesel engine is to _______
A
Increases air supply
B
Reduces friction
C
Turns turbo charger
D
Gives power
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Answer & Explanation
The correct answer is Option B: 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.