Automobile Engineering in ME
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
Maintains a seal and prevents the fuel leakage
Creates swirl
Increases the combustion temperature

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Automobile Engineering in ME
The composition of the electrolyte in a fully charged battery is that

The electrolyte is pure sulphuric acid
The electrolyte is a mixture of 90% distilled water and 10% sulphuric acid by weight
The electrolyte is pure distilled water
The electrolyte is a mixture of 64% distilled water and 36% sulphuric acid by weight

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