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Electrolysis and Storage Batteries

Electrolysis and Storage Batteries
Lead-acid cell has a life of nearly charges and discharges

700
1000
1250
500

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

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

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Electrolysis and Storage Batteries
Mercury cell has which of the following characteristics?

High power to weight ratio
All of these
Flat discharge current-voltage curve
Comparatively longer shelf life under adverse conditions of high temperature and humidity

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Electrolysis and Storage Batteries
The current flow through electrolyte is due to the movement of

ions
electrons
None of these
holes

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Electrolysis and Storage Batteries
Batteries are charged by

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

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Electrolysis and Storage Batteries
When two batteries are connected in parallel, it should be ensured that

they have same ampere-hour capacity
they have identical internal resistance
they have same make
they have same e.m.f.

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