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Electrolysis and Storage Batteries

Electrolysis and Storage Batteries
The ratio of ampere-hour efficiency to watt-hour efficiency of a lead-acid cell is

none of the listed here
always less than one
just one
always greater than one

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Electrolysis and Storage Batteries
The watt-hour efficiency of a lead-acid cell varies between

25 to 35%
90 to 95%
40 to 60%
70 to 80%

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Electrolysis and Storage Batteries
The active material of the positive plates of silver-zinc batteries is

zinc powder
lead
lead oxide
silver oxide

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Electrolysis and Storage Batteries
A constant-voltage generator has

minimum efficiency
low internal resistance
minimum current capacity
high internal resistance

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Electrolysis and Storage Batteries
When the specific gravity of the electrolyte of a lead-acid cell is reduced to 1.1 to 1.15 the cell is in

none of the listed here
discharged state
active state
charged state

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Electrolysis and Storage Batteries
Each cell has a vent cap

to check the level of electrolyte
to add water to the cell if needed
all of the listed here
to allow gases out when the cell is on charge

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MORE MCQ ON Electrolysis and Storage Batteries

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