Automobile Engineering MCQs

72. The main characteristics of a maintenance-free (MF) battery is that

a maintenance-free battery requires little maintenance during normal use and it is sufficient to add water instead of an electrolyte containing sulphuric acid
a maintenance-free battery has a relatively short shelf life when compared with standard batteries
since it is sealed, the water in a maintenance-free battery is not lost through evaporation thus accordingly it is not necessary to top up the cells with water
recharging of a mainte
✅ The correct answer is option C.

76. The purpose of a cylinder head gasket is to

prevent the combustion gases from leaking from the joint between the cylinder block and the cylinder head
prevent engine oil from going into combustion chamber
removes impurities from cylinder head lubricating oil
none of the above
✅ The correct answer is option A.

79. The two kinds of piston rings are

compression and oil-control rings
compression and sliding seal rings
oil scrapper and oil-control rings
pressure and sealing r
✅ The correct answer is option A.
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