With a direct drive main propulsion...

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Question 1 of 2066636eef28f7522a1c51fa44

With a direct drive main propulsion arrangement, what statement is true?

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Question 1 of 20

66636eef28f7522a1c51fa44

With a direct drive main propulsion arrangement, what statement is true?

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🔍 Key Concepts

• Direct drive main propulsion (engine connected to propeller shaft without a reduction gear) • Relationship between engine RPM (revolutions per minute) and propeller shaft RPM in different arrangements • How geared vs direct drives change speed ratios

💭 Think About

• If there is no reduction gear between the engine and the shaft, how many turns does the shaft make for each turn of the engine? • In which type of arrangement (direct drive or geared) would you expect the propeller shaft to turn slower or faster than the engine? • Which answer choice describes a 1:1 speed relationship between engine and shaft?

✅ Before You Answer

• Confirm what direct drive means: is there a speed-changing gear between engine and shaft? • Decide whether a ratio other than 1:1 is possible without gearing in a direct drive system. • Eliminate any choices that require the shaft and engine to turn at different RPMs when they are rigidly connected.

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Question 1 of 2066636eef28f7522a1c51fa44

With a direct drive main propulsion arrangement, what statement is true?

Back

Question 1 of 20

66636eef28f7522a1c51fa44

With a direct drive main propulsion arrangement, what statement is true?

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