Assam ASSEB HSLC NSQF Automotive Practice Questions - Assam ASSEB HSLC Class 10 NSQF Automotive Service Technician Level 2 Examination (SEBA ASSEB 2026) Exam

What is the specific function of compression rings fitted onto an engine piston?

To scrape excess lubricating oil off the cylinder wall To prevent combustion gas leakage from the combustion chamber into the crankcase To connect the piston directly to the crankshaft journal To control the timing of intake valve opening

Correct Answer:

To prevent combustion gas leakage from the combustion chamber into the crankcase

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