123) The main task of a battery in automobiles is to

supply electricity to the alternator

act as a reservoir or stabilizer of electricity

supply electricity to the vehicle's electrical system at all times while the engine is running.

supply a large amount of power to turn the starter motor when the engine is being started.

Answer is:

supply a large amount of power to turn the starter motor when the engine is being started.

Automobile Engineering MCQ with Answers

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124) How many cells are used in a 12 volt car battery ?

Answer is:

6

125) The acid used in automobile battery is

hydrochloric acid

hydrofluoric acid

nitric acid

sulphuric acid

Answer is:

sulphuric acid

126) The instrument used to check specific gravity of acid in a battery is

hydrometer

hygrometer

anemometer

multimeter

Answer is:

hydrometer

Explanation:

Hydrometer is an instrument used to measure the specific gravity or relative density of liquids, i.e. the ratio of the density of the liquid to the density of water. Hydrometers are usually made of glass and consists of a cylindrical stem and a bulb weighted with a heavy material to make it float upright