The maximum lube oil temperature leaving the...

Question 1 / 205eccefa1bacbc34ba4d47263

Question 1 of 205eccefa1bacbc34ba4d47263

The maximum lube oil temperature leaving the lube oil cooler of a main steam turbine propulsion system should __________.

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Question 1 of 20

5eccefa1bacbc34ba4d47263

The maximum lube oil temperature leaving the lube oil cooler of a main steam turbine propulsion system should __________.

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🔍 Key Concepts

• Lube oil properties and how temperature affects viscosity and bearing protection • Typical operating temperature range for main turbine lube oil systems • Why overheating lube oil is dangerous for bearings and oil life

💭 Think About

• Think about what temperature range keeps the oil thin enough to flow easily, but still thick enough to protect the bearings in a high‑speed turbine. • Ask yourself: at what approximate temperature does most mineral lube oil begin to oxidize rapidly or lose film strength? • Consider whether the outlet temperature should be a fixed safe limit, a temperature difference, or something that varies with sea water temperature.

✅ Before You Answer

• Compare the choices to a realistic safe upper limit for continuous lube oil operation in main turbines. • Eliminate any answer that would clearly risk oil breakdown or bearing damage over time. • Decide whether a well‑designed cooler system would be controlled by oil requirements or by external factors like sea water temperature.

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Question 1 of 20

The maximum lube oil temperature leaving the lube oil cooler of a main steam turbine propulsion system should __________.

be about 180°F

never be more than 60°F below the lube oil inlet temperature

never exceed 130°F

be dictated only by the existing sea water temperature

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Question 1 / 205eccefa1bacbc34ba4d47263

Question 1 of 205eccefa1bacbc34ba4d47263

The maximum lube oil temperature leaving the lube oil cooler of a main steam turbine propulsion system should __________.

Back

Question 1 of 20

5eccefa1bacbc34ba4d47263

The maximum lube oil temperature leaving the lube oil cooler of a main steam turbine propulsion system should __________.

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

Quick actions

— No credit card needed