In an engine, the temperature of the piston will be more at the

34) The function of a first compression ring (top ring) is that it

increases the combustion temperature

creates swirl

maintains a seal and prevents the fuel leakage

maintains a seal and prevents escape of burned gases and loss of pressure in the combustion chamber

Answer is:

maintains a seal and prevents escape of burned gases and loss of pressure in the combustion chamber

Explanation:

The function of a first compression ring (top ring) is that it maintains a seal and prevents escape of burned gases and loss of pressure in the combustion chamber.

35) The function of a second ring is that it is a

backup compression ring which will work in place of the top ring when it is broken

compression ring and aids the top ring in sealing and cooling

backup oil control ring which will work in place of the bottom ring when it is broken

cushion ring which prevents piston slap and knock

Answer is:

compression ring and aids the top ring in sealing and cooling

Explanation:

The function of a second ring is that it is a compression ring and aids the top ring in sealing and cooling.

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.

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.

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In an engine, the temperature of the piston will be more at the

crown of the piston

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Related Automobile Engineering MCQ with Answers

34) The function of a first compression ring (top ring) is that it

maintains a seal and prevents escape of burned gases and loss of pressure in the combustion chamber

35) The function of a second ring is that it is a

compression ring and aids the top ring in sealing and cooling

36) 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

37) The piston compression rings are made of

cast iron

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