Automobile Engineering in ME
The correct way to rectify an imbalanced wheel is to

Adjust the tyre pressure
Adjust the damper spring tension
Attach appropriate weights to the wheel at appropriate positions
Rotate the tyres

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Automobile Engineering in ME
The function of a first compression ring (top ring) is that it

Increases the combustion temperature
Maintains a seal and prevents escape of burned gases and loss of pressure in the combustion chamber
Creates swirl
Maintains a seal and prevents the fuel leakage

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