Automobile Engineering in ME
The most accurate ignition system of a spark ignition engine is

Battery system
Electronic control unit system
Magneto and electronic system
Magneto system

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Automobile Engineering in ME
The ball joints are used on the tie rod ends, because they

Improve the force transmission speed
Can deal with movement of the suspension both vertically and in other directions
Reduce the amount of noise generated
Reduce the amount of sliding resistance

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