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OCTCO/OCTF Exit Exam • Set 5 Question 12 of 30

Higher viscosity means?

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Direct Answer

Option C: Poor atomization of fuel

High fuel viscosity prevents proper mechanical atomization inside combustion chambers, leading to incomplete combustion, carbon deposits, and thermal inefficiency. Marine engineering standards require maintaining correct fuel oil temperatures prior to injection to achieve optimum viscosity for atomization.

All Options

A
Proper atomization of fuel
B
Rich atomization of fuel
C
Poor atomization of fuel (Correct Answer)
D
Easy pumping

Detailed Explanation & Context

High fuel viscosity prevents proper mechanical atomization inside combustion chambers, leading to incomplete combustion, carbon deposits, and thermal inefficiency. Marine engineering standards require maintaining correct fuel oil temperatures prior to injection to achieve optimum viscosity for atomization.

Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Oil and Chemical Tanker Cargo Operations (OCTCO/OCTF).

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