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Electrolysis and Storage Batteries

Electrolysis and Storage Batteries
The storage battery generally used in electric power station is

zinc-carbon battery
lead-acid battery
nickel-cadmium battery
none of the listed here

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

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

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Electrolysis and Storage Batteries
On the average the ampere-hour efficiency of an Edison cell is about

0.7
0.4
0.8
0.6

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Electrolysis and Storage Batteries
Batteries are charged by

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

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

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

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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

discharged state
active state
charged state
none of the listed here

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MORE MCQ ON Electrolysis and Storage Batteries

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