Internal Combustion Engines
Which of the following is false statement?Excess quantities of sulphur in diesel fuel are Objectionable because it may cause the following

Piston ring and cylinder wear
Formation of hard coating on piston skirts
Oil sludge in the engine crank case
Detonation

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Internal Combustion Engines
Supercharging is the process of

Supplying the intake of an engine with air at a density greater than the density of the surrounding atmosphere
Injecting excess fuel for raising more loads
Supplying compressed air to remove combustion products fully
Providing forced cooling air

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