Automobile Engineering in ME
The characteristic that is enhanced by the honing of cylinder sleeves inner surface is

Resistance to wear
Lubrication performance
None of these
Cooling efficiency

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Automobile Engineering in ME
The auto ignition in a spark ignition engine means

Ignition of the charge before the passage of flame front
Automatic ignition of the charge at the end of compression
Ignition induced by the passage of a spark
Ignition induced to supplement the process of normal combustion

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