Relief valves are provided on main engine cylinders for protection against high
Direct Answer
Option B: pressure
Cylinder head relief valves are safety devices designed to protect the engine from potentially catastrophic over-pressurization within the combustion chamber. This can occur due to excessive fuel injection or other abnormal combustion events, not high exhaust temperature or speed.
All Options
Detailed Explanation & Context
Cylinder head relief valves are safety devices designed to protect the engine from potentially catastrophic over-pressurization within the combustion chamber. This can occur due to excessive fuel injection or other abnormal combustion events, not high exhaust temperature or speed.
Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Marine Engineering Knowledge (MEK).
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