General Studies · IC Engine
Which of the following statements is correct regarding the knocking tendency in Spark Ignition (SI) engines?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1An increase in compression ratio increases the knocking tendency of the SI engine.✓
- 2An increase in compression ratio decreases the knocking tendency of the SI engine.
- 3An increase in the power output of the SI engine decreases the tendency to knock.
- 4An increase in temperature of the combustion chamber of the SI engine decreases the tendency of knocking.
Correct answer
An increase in compression ratio increases the knocking tendency of the SI engine.
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