Question

Which of these engine components forms a tight seal between the piston and the cylinder and is necessary for proper engine operation?
A.piston ring

B.connecting rod bearing

C.cylinder wall

D.head gasket

Answer 1

Answer:

A.piston ring

Explanation:

A piston ring is a round component that is located between the piston and the cylinder and it helps to prevent that the combustion gas leaks through the opening between the piston and the cylinder and this allows the engine to work efficiently. Because of this, the engine component that forms a tight seal between the piston and the cylinder and is necessary for proper engine operation is the piston ring.

Answer 2

Piston rings help form a tight seal between the piston and cylinder.   Answer is A. Piston ring