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Electrolysis and Storage Batteries

Electrolysis and Storage Batteries
The active materials of a nickel-iron battery are

all of these
nickel hydroxide
powdered iron and its oxide
21% solution of kOH

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Electrolysis and Storage Batteries
Batteries are charged by

engine generator sets
motor generator sets
rectifiers
any one of the listed here

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Electrolysis and Storage Batteries
Specific gravity of electrolyte in Edison cell is

1.5
1.1
1.21
2.0

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Electrolysis and Storage Batteries
Persons preparing electrolyte should wear

rubber boots and gloves
goggles or other face shield
all of these
rubber

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Electrolysis and Storage Batteries
In order that a hydrometer may float vertically in electrolyte its C.G. should be

lowered
raised
undisturbed
displaced sideways

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Electrolysis and Storage Batteries
When a lead-acid battery is in fully charged condition, the color of its positive plate is

dark grey
none of the listed here
brown
dark brown

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