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The valves of an ic engine are made to open and close slowly to _________

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in Automobile Engineering by (80.5k points)
The valves of an ic engine are made to open and close slowly to _________

(a) Increase the engine efficiency

(b) Decrease the fuel consumption

(c) Allow engine to cool in the meantime

(d) Provide silent operation under high speed conditions

This question was addressed to me in unit test.

This question is from Development of IC Engines topic in division Internal Combustion Engines of Automobile Engineering

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Correct option is (d) Provide silent operation under high speed conditions

Best explanation: The valves are made to open and close slowly to provide silent operation under high speed conditions.

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