The observed distance for a day's run was...

Question 1 / 2066636eea28f7522a1c51b41a

Question 1 of 2066636eea28f7522a1c51b41a

The observed distance for a day's run was 302.7 miles. The propeller had a pitch of 20'06", and the average RPM was 67. What was the slip?

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Question 1 of 20

66636eea28f7522a1c51b41a

The observed distance for a day's run was 302.7 miles. The propeller had a pitch of 20'06", and the average RPM was 67. What was the slip?

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🔍 Key Concepts

• Theoretical distance a vessel should travel in one day based on propeller pitch and RPM • Formula for propeller slip %: (Theoretical – Observed) / Theoretical × 100 • How to convert propeller pitch in feet and inches to decimal feet

💭 Think About

• How do you find the total number of propeller revolutions in the day from the given RPM? • Once you know total revolutions and pitch, how do you calculate the theoretical distance the ship should have traveled with 0% slip? • After you compare theoretical and observed distances, what does a positive slip vs a negative slip mean physically?

✅ Before You Answer

• Carefully convert 20'06" to decimal feet before multiplying by total revolutions • Make sure you convert time in hours to minutes when using RPM (revolutions per minute) • Check the sign of slip: if the ship traveled less than the theoretical distance, slip should be positive, if more, slip should be negative

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Question 1 of 20

The observed distance for a day's run was 302.7 miles. The propeller had a pitch of 20'06", and the average RPM was 67. What was the slip?

-7.0%

+0.7%

+7.0%

-0.7%

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Question 1 / 2066636eea28f7522a1c51b41a

Question 1 of 2066636eea28f7522a1c51b41a

The observed distance for a day's run was 302.7 miles. The propeller had a pitch of 20'06", and the average RPM was 67. What was the slip?

Back

Question 1 of 20

66636eea28f7522a1c51b41a

The observed distance for a day's run was 302.7 miles. The propeller had a pitch of 20'06", and the average RPM was 67. What was the slip?

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