Electrolysis and storage of batteries

[amp_mcq option1=”10% of capacity” option2=”20% of capacity” option3=”30% of capacity” option4=”40% of capacity” correct=”option1″]

Detailed SolutionUnder normal charging rate, the charging current should be

[amp_mcq option1=”below” option2=”equal to” option3=”above” option4=”none of the above” correct=”option2″]

Detailed SolutionLevel of electrolyte in a cell should be _____ the level of plates

[amp_mcq option1=”1″ option2=”1.5″ option3=”2.4″ option4=”2.9″ correct=”option2″]

Detailed SolutionA battery of 6 cells will show a drop of _____ volts from fully charged state to fully discharged state.

[amp_mcq option1=”20 to 30%” option2=”40 to 50%” option3=”60 to 70%” option4=”90 to 95%” correct=”option3″]

Detailed SolutionThe ampere-hour efficiency of a leadacid cell is normally between

[amp_mcq option1=”In well ventilated location” option2=”In clean and dry place” option3=”As near as practical to the battery being charged” option4=”In location having all above features” correct=”option4″]

Detailed SolutionBattery charging equipment is generally installed

[amp_mcq option1=”A storage cell has a reversible chemical reaction” option2=”A lead-acid cell can be recharged” option3=”A carbon-zinc cell has unlimited shelf life” option4=”A primary cell has an irreversible chemical reaction” correct=”option3″]

Detailed SolutionWhich of the following is incorrect?

[amp_mcq option1=”manometer” option2=”a mechanical gauge” option3=”hydrometer” option4=”psychrometer” correct=”option3″]

Detailed SolutionThe specific gravity of electrolyte is measured by

[amp_mcq option1=”6 parts of acid to 4 parts of water” option2=”4 parts of acid to 4 parts of water” option3=”4 parts of acid to 6 parts of water” option4=”4 parts of acid to 8 parts of water” correct=”option3″]

Detailed SolutionIn a lead-acid cell, if the specific gravity of sulphuric acid is 1.8, it will require following ratio of acid to water to get mixture of specific gravity of 1.3