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Which of the mentioned below is not a desired property of vane material?

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in Automotive Engine Design by (136k points)
Which of the mentioned below is not a desired property of vane material?

(a) High strength

(b) Low friction

(c) Low coefficient of thermal expansion

(d) Quiet running

The question was posed to me in a job interview.

This key question is from Petrol Engine Fuel Supply System topic in division Exhaust System & Petrol Engine Fuel Supply System of Automotive Engine Design

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The correct answer is (a) High strength

To explain: The properties required for a vane material are quiet running, low friction, low coefficient of thermal expansion, and resistance to continuous exposure to oil and petrol.

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