CELLS AND BATTERIES - Practice Mode

1) Which method is used to charge the battery at very low rate and long period?

Rectifier method Trickle charging method Constant current method Constant potential method

Correct Answer: Trickle charging method

2) Which instrument is used to measure electrolyte specific gravity?

Barometer Hydrometer Lactometer Thermometer

Correct Answer: Hydrometer

3) Why the vent plugs are kept open during charging of lead acid battery?

Check the level of electrolyte Release the gas produced Enter the oxygen from atmospheric air Check the condition of plates

Correct Answer: Release the gas produced

4) Which is applied on the battery terminals to avoid corrosion?

Solid grease Petroleum jelly Lubricating oil Liquid grease

Correct Answer: Petroleum jelly

5) What happens to the terminal voltage of a cell if load is increased?

Decreases Increases Remain same Falls to zero

Correct Answer: Decreases

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