Question 53Motor Plants - Assistant Engineer

The correct answer is A) fuel oil pump. The fuel oil pump is responsible for delivering fuel from the fuel tank to the engine's fuel injection system. This is a critical component in a large slow-speed main propulsion diesel engine, as it ensures the proper amount of fuel is supplied to the engine for combustion. The other answer choices are incorrect because: B) the jacket water pump circulates coolant through the engine block, C) the crankcase exhaust fan removes combustion byproducts from the crankcase, and D) the lube oil pump circulates engine lubricating oil, none of which are the specific component labeled "G" in the provided illustration.