NAVTTC Auto Mechanic Practice Questions - NAVTTC Trade Test - Auto Mechanic Motor Vehicle Mechanic (Pakistan) Exam

What is the primary function of the piston rings in an internal combustion engine?

To connect the piston to the connecting rod To seal the combustion chamber and regulate oil consumption To open and close the intake and exhaust valves To balance the rotation of the crankshaft

Correct Answer:

To seal the combustion chamber and regulate oil consumption

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