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Which of the following is not a factor for scuffing?

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in Automotive Engine Design by (137k points)
Which of the following is not a factor for scuffing?

(a) Proper protecting lubrication film

(b) Overheated engine

(c) Insufficient clearance

(d) Lack of lubrication

I got this question in an online interview.

This key question is from Engine Components topic in portion Basic Engine Components of Automotive Engine Design

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The correct choice is (a) Proper protecting lubrication film

Easy explanation: The main cause for scuffing is overheatedengine, lack of lubrication, insufficient clearance. An overheated engine wherein there is no proper cooling system and leakage of coolant. When a protective lubricating oil film is provided no scuffing takes place.

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