Suppose a diesel engine is fitted with sea water-cooled lube oil and jacket water coolers. What statement is true concerning the system operating pressures?

Question

Accepted Answer

The jacket water pressure is maintained higher than the sea water pressure in the jacket water cooler, and the lube oil pressure is maintained higher than the sea water pressure in the lube oil cooler.

Answer

The jacket water pressure is maintained higher than the sea water pressure in the jacket water cooler, and the lube oil pressure is maintained lower than the sea water pressure in the lube oil cooler.

Answer

The jacket water pressure is maintained lower than the sea water pressure in the jacket water cooler, and the lube oil pressure is maintained lower than the sea water pressure in the lube oil cooler.

Answer

The jacket water pressure is maintained lower than the sea water pressure in the jacket water cooler, and the lube oil pressure is maintained higher than the sea water pressure in the lube oil cooler.

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