36) The function of oil control rings is that it

lubricates the cylinder wall by releasing oil from its hole

keeps the cylinder wall lubricated by holding oil in its channel

prevents engine oil from going into the combustion chamber and returns excess lubricating oil off the cylinder wall through the return holes in the piston to the oil pan

maintain a seal and prevents escape of burned gases and oil leakage.

Answer is:

prevents engine oil from going into the combustion chamber and returns excess lubricating oil off the cylinder wall through the return holes in the piston to the oil pan

Explanation:

The function of oil control rings is that it prevents engine oil from going into the combustion chamber and returns excess lubricating oil off the cylinder wall through the return holes in the piston to the oil pan.

Automobile Engineering MCQ with Answers

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37) The piston compression rings are made of

Answer is:

cast iron

Explanation:

Piston rings are commonly made from cast iron. Cast iron retains the integrity of its original shape under heat, load, and other dynamic forces. Piston rings seal the combustion chamber, conduct heat from the piston to the cylinder wall, and return oil to the crankcase.