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

What is the primary function of oil control rings on an aircraft engine piston?

To prevent cylinder gas leakage into the crankcase To regulate the thickness of the oil film on the cylinder wall and scavenge excess oil To support the wrist pin within the piston bosses To transfer heat directly from the piston head to the crankshaft

Correct Answer:

To regulate the thickness of the oil film on the cylinder wall and scavenge excess oil

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