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Electrolysis and Storage Batteries

Electrolysis and Storage Batteries
The ampere-hour efficiency of a leadacid cell is normally between

20 to 35%
90 to 95%
70 to 75%
80 to 85%

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Electrolysis and Storage Batteries
Which of the following battery is used for aircraft ?

Nickel-iron battery
Lead-acid battery
Silver oxide battery
Dry cell battery

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Electrolysis and Storage Batteries
During the charging of a lead-acid cell

its voltage increases
it gives out energy
its cathode becomes dark chocolate brown in colour
specific gravity of H₂SO₄ decreases

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Electrolysis and Storage Batteries
Battery charging equipment is generally installed

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

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Electrolysis and Storage Batteries
Over charging

loosens the active material
all of the listed here
produces excessive gassing
increases the temperature resulting in buckling of plates

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Electrolysis and Storage Batteries
Internal resistance of a cell is due to

resistance of electrolyte
all of the listed here
surface contact resistance between electrode and electrolyte
electrode resistance

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