Automobile Engineering in ME
The battery is an electrochemical device, which means battery

Makes chemicals by mechanical means
Uses chemical action to provide electricity
Does not use an electrolyte
Has curved plates instead of flat plates

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Automobile Engineering in ME
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

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