NCAA AME Powerplant Exam Practice Test & Question Bank Practice Questions - NCAA Aircraft Maintenance Engineer Licence - Powerplant (Nigeria) Exam

What is the main cause of detonation in a reciprocating engine?

Instantaneous uncontrolled explosion of the unburned fuel-air mixture ahead of the flame front Pre-ignition caused by glowing carbon deposits before spark plug firing Excessively rich fuel mixture at high power settings Using an aviation fuel with an octane rating higher than specified

Correct Answer:

Instantaneous uncontrolled explosion of the unburned fuel-air mixture ahead of the flame front

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