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How is the knocking tendency increased?

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in Engineering Chemistry II by (789k points)
How is the knocking tendency increased?

(a) Due to the compression ratio of the engine

(b) Due to size of the engine

(c) Due to the decrease in the engine speed

(d) Due to a defect in an engine

The question was posed to me by my school teacher while I was bunking the class.

Asked question is from Knocking in division Fuels and Combustion of Engineering Chemistry II

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The correct option is (c) Due to the decrease in the engine speed

To explain: The knocking tendency is increased by reducing the engine speed and by advancing the ignition of the engine. The engine should work in its original way.

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