Electrolysis and storage of batteries

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

1
1.5
2.4
2.9

Detailed SolutionA battery of 6 cells will show a drop

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of _____ volts from fully charged state to fully discharged state.

44. The ampere-hour efficiency of a leadacid cell is normally between

20 to 30%
40 to 50%
60 to 70%
90 to 95%

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leadacid cell is normally between" class="read-more button" href="https://exam.pscnotes.com/mcq/the-ampere-hour-efficiency-of-a-leadacid-cell-is-normally-between/#more-43796">Detailed SolutionThe ampere-hour efficiency of a leadacid cell is normally between

45. Battery charging equipment is generally installed

In well ventilated location
In clean and dry place
As near as practical to the battery being charged

Detailed SolutionBattery charging equipment is generally installed

46. Which of the following is incorrect?

A storage cell has a reversible chemical reaction
A lead-acid cell can be recharged
A carbon-zinc cell has unlimited shelf life
A primary cell has an irreversible chemical reaction

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the following is incorrect?" class="read-more button" href="https://exam.pscnotes.com/mcq/which-of-the-following-is-incorrect-5/#more-43696">Detailed SolutionWhich of the following is incorrect?

47. The specific gravity of electrolyte is measured by

manometer
a mechanical gauge
hydrometer
psychrometer

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74.6 75.5c-23.5 6.3-42 24.9-48.3 48.6-11.4 42.9-11.4 132.3-11.4 132.3s0 89.4 11.4 132.3c6.3 23.7 24.8 41.5 48.3 47.8C117.2 448 288 448 288 448s170.8 0 213.4-11.5c23.5-6.3 42-24.2 48.3-47.8 11.4-42.9 11.4-132.3 11.4-132.3s0-89.4-11.4-132.3zm-317.5 213.5V175.2l142.7 81.2-142.7 81.2z"/> Subscribe on YouTube href="https://exam.pscnotes.com/mcq/the-specific-gravity-of-electrolyte-is-measured-by/#more-43345">Detailed SolutionThe specific gravity of electrolyte is measured by

48. In 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

6 parts of acid to 4 parts of water
4 parts of acid to 4 parts of water
4 parts of acid to 6 parts of water

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

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