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

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

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Automobile Engineering in ME
The main characteristics of a maintenance free (MF) battery is that

Since it is sealed, the water in maintenance free battery is not lost through evaporation thus accordingly it is not necessary to top up the cells with water
A maintenance free battery has a relatively short shelf life when compared with standard batteries
A maintenance free battery requires little maintenance during normal use and it is sufficient to add water instead of an electrolyte containing sulphuric acid
Recharging of a maintenance free battery is neither required nor possible

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Automobile Engineering in ME
The purpose of a cylinder head gasket is to

None of these
Prevent the combustion gases from leaking from the joint between the cylinder block and the cylinder head
Removes impurities from cylinder head lubricating oil
Prevent engine oil from going into combustion chamber

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Automobile Engineering in ME
Incorrect steering axis inclination (S.A.I.) causes

Poor recovery of the steering wheel after making a turn
The vehicle to pull to the side of lesser inclination
Generation of a braking effect at tight corners
Tendency to assume toe-out orientation

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