Which outcome occurs when an internal combustion engine's air-fuel mixture auto-ignites prior to spark?

💡 Explanation

Cylinder detonation occurs because uncontrolled, premature combustion increases peak pressures via uncontrolled flame propagation, therefore pressures sharply rise, rather than a controlled burn; other options involve different mechanisms that reduce, not cause, detonation.

• Which outcome arises during rocket engine startup when the propellant injectors deliver fuel unevenly?
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