Which risk increases when fuel flashback occurs back through a carburetor?

💡 Explanation

Fuel flashback creates combustible mixture in the intake; auto-ignition causes an explosion, because unburnt volatiles are in the manifold. Therefore auto-ignition is primary, rather than catalytic failure, which requires prolonged elevated temperatures.

• Which actuator failure results when rapid cycling overheats solenoid coils?
• Which risk increases when excessive bore polishing performed during engine piston installation?
• Maintaining constant transformer voltage with fluctuating demand requires which mechanism in the tap changer circuit?
• Which consequence results when a jet aircraft's elevator-trim-tab servo motor fails?
• In a hydraulic system driving intermittent high-load actuators, which outcome occurs when the accumulator's pre-charge pressure is excessively low?
• In a wind turbine with stall-regulated blades, which outcome occurs when wind speed exceeds operational limits?