Engine Safety (Supplementary) USCG Question #21 (Set 1)

The highest pressure in any closed diesel engine freshwater cooling system is at the __________.

Official USCG Answer & Rule Citation

Correct Answer: Option C — cooling water pump outlet

The maximum hydraulic pressure within a closed jacket water cooling system occurs immediately at the discharge of the cooling water pump due to centrifugal head generation before system flow resistance drops the pressure.

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