Referring to the illustrated motor ship...

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Question 1 of 2066636eee28f7522a1c51f0f2

Referring to the illustrated motor ship freshwater cooling system drawing, which cooling system has cooling water passing through passages within components that are continuously undergoing motion? Illustration MO-0212

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Question 1 of 20

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🔍 Key Concepts

• Study which parts of the main engine move back and forth or rotate during operation (pistons, telescoping pipes, injector internals, etc.). • Look on the diagram for where fresh water actually enters and leaves components that are inside the moving part rather than just around a stationary housing. • Compare the flow paths for the piston cooling system, injector cooling system, jacket water system, and SSDG cooling system and note which components are fixed to the engine block versus those that reciprocate.

💭 Think About

• On the schematic, which system’s cooling water clearly goes up into a component that moves up and down inside the cylinder liner? • Does jacket water flow through the engine block (stationary) or through parts that reciprocate? How about the SSDGs—are their coolers fixed or moving? • For the injector cooling, is the water inside a moving passage, or does it simply cool a stationary injector body while its internal fuel parts move?

✅ Before You Answer

• Identify the one system where water must pass through telescoping or flexible connections in order to reach a moving part. • Verify which component in the drawing is labeled as a piston or directly connected to the crank mechanism and receives cooling water inside it. • Eliminate any systems where all coolers and water passages are clearly drawn as stationary heat exchangers or jackets bolted to the engine or generator.

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