Question 342Motor Plants - Assistant Engineer
70% to passWhat is the function of the item "7" shown in the illustration? Illustration MO-0111
AThis jacket water pump circulates fresh water throughout the engine cooling and distiller heating systems.
BThis circulating salt water pump will supply feedwater for the operation of the distiller.
CThis jacket water pump supplies the distiller with sea water feed while also powering the eductors.
DThis jacket water pump circulates salt water through the jacket water cooling system to provide engine cooling.
AI Explanation
The correct answer is A. This jacket water pump circulates fresh water throughout the engine cooling and distiller heating systems. The pump labeled "7" in the illustration is responsible for circulating the fresh water coolant through the engine and the distiller's heating system, which is a common function of a jacket water pump on marine diesel engines. The other answer choices are incorrect because they describe functions of a different type of pump, such as a circulating salt water pump or an eductor-type pump, which would not be the primary function of the item labeled "7" in this particular illustration.
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