Question 29 of 30
Relief valves are provided on main engine cylinders for protection against high
A
pressure
B
exhaust temperature
C
speed
D
level of water
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Answer & Explanation
The correct answer is Option A: 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.