Of the following propulsion modes, which one...

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Question 1 of 205eccefa3bacbc34ba4d47ceb

Of the following propulsion modes, which one would operate with a geared-drive featuring a double reduction?

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5eccefa3bacbc34ba4d47ceb

Of the following propulsion modes, which one would operate with a geared-drive featuring a double reduction?

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🔍 Key Concepts

• Slow, medium, and high speed diesels are classified mainly by their RPM range • Why geared-drive and especially double-reduction gears are used between an engine and a propeller • Typical propulsion arrangements for large ocean-going ships vs. small high-speed craft

💭 Think About

• Think about which engines usually run at very high RPM compared to the propeller’s optimal RPM • Ask yourself: when the engine RPM is much higher than the propeller RPM, do you need more or less reduction in gearing? • Consider which of the listed prime movers most commonly drives a controllable-pitch or fixed-pitch propeller through reduction gearing rather than directly

✅ Before You Answer

• Know the approximate RPM range for slow, medium, and high speed diesels and gas turbines • Recall which engine type is often direct-coupled to the propeller shaft (no or minimal reduction gearing) • Identify which propulsion mode typically requires large reduction ratios and therefore may use double-reduction gearing

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Question 1 of 205eccefa3bacbc34ba4d47ceb

Of the following propulsion modes, which one would operate with a geared-drive featuring a double reduction?

Back

Question 1 of 20

5eccefa3bacbc34ba4d47ceb

Of the following propulsion modes, which one would operate with a geared-drive featuring a double reduction?

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