A diesel engine driven winch on your towing...

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Question 1 of 2066636eef28f7522a1c51f961

A diesel engine driven winch on your towing vessel is fitted with a reversing reduction gear equipped with dry-type friction clutches. Which of the operational conditions listed below is most likely to result in clutch slippage and associated clutch disc wear?

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🔍 Key Concepts

• Dry-type friction clutch behavior under load • Effect of engine RPM on engagement/disengagement shock and heat • Difference between engaging vs disengaging a clutch

💭 Think About

• Think about when the greatest heat and friction are created in a clutch: is it when you are connecting power, or when you are disconnecting it? • How does engine speed (idle vs high RPM) affect how violently the clutch surfaces contact each other when they are brought together? • Which combination of action (engage/disengage) and RPM would keep the clutch discs rubbing (slipping) against each other the longest under heavy load?

✅ Before You Answer

• Identify which operation actually transmits power through the clutch (engaging vs disengaging) • Compare how much relative speed there is between clutch plates at idle vs high RPM • Ask which listed habit would create the most heat and glazing/wear on dry friction discs over time

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