MEK Exit Exam • Set 3 Question 3 of 30

Speed of diesel engine is adjusted by changing the supply of

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Direct Answer

Option C: fuel

The speed of a diesel engine is primarily regulated by controlling the amount of fuel injected into the cylinders. Increasing fuel supply increases power and speed, while decreasing it reduces them. Air supply is also important but fuel is the primary control.

All Options

A

lubricating oil

B

air

C

fuel (Correct Answer)

D

water

Detailed Explanation & Context

The speed of a diesel engine is primarily regulated by controlling the amount of fuel injected into the cylinders. Increasing fuel supply increases power and speed, while decreasing it reduces them. Air supply is also important but fuel is the primary control.

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

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