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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
During the idle period of the battery, strong electrolyte tends to change the active material of the cell into

Pb
Pb02
PbO
PbSC-4

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Electrolysis and Storage Batteries
Internal resistance of a cell is reduced by

all of the listed here
putting plates very close together
increasing the plate area
using vent plug to permit gas formed during discharge

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Electrolysis and Storage Batteries
As compared to a lead-acid cell, the efficiency of a nickel-iron cell is less due to its

higher internal resistance
small quantity of electrolyte used
lower e.m.f.
compactness

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Electrolysis and Storage Batteries
Extent of corrosion in the underground metal work depends upon

amount of moisture
all of these
type of metals
type of soil chemicals

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Electrolysis and Storage Batteries
A constant-voltage generator has

high internal resistance
low internal resistance
minimum current capacity
minimum efficiency

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