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Electrolysis and Storage Batteries

Electrolysis and Storage Batteries
In constant-current charging method, the supply voltage from discharged to fully charged condition

remains constant
increases
none of the listed here
decreases

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Electrolysis and Storage Batteries
48 ampere-hour capacity would deliver a current of

6 amperes for 8 hours
48 amperes for 1 hour
24 amperes for 2 hours
8 amperes for 6 hours

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Electrolysis and Storage Batteries
On overcharging a battery

It will increase the capacity of the battery
None of these
It will bring about chemical change in active materials
It will raise the specific gravity of the electrolyte

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Electrolysis and Storage Batteries
Local action in a battery is indicated by

none of the listed here
excessive gassing under load conditions
excessive drop in the specific gravity of electrolyte even when the cell is on open circuit
both of the listed here

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Electrolysis and Storage Batteries
During the charging and discharging of a nickel-iron cell

water is neither formed nor absorbed
its e.m.f. remains constant
nickel hydroxide remains unsplit
corrosive fumes are produced

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Electrolysis and Storage Batteries
If a battery is wrongly connected on charge following will happen

current drawing will be very small
current drawing will be very high
current delivered by the battery will be high
current drawing will be nil

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