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Electrolysis and Storage Batteries

Electrolysis and Storage Batteries
Weston standard cell at 20°C has voltage of ____ volts.

1.5
1.2
1.0187
0.8

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Electrolysis and Storage Batteries
Over charging

produces excessive gassing
all of the listed here
loosens the active material
increases the temperature resulting in buckling of plates

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Electrolysis and Storage Batteries
The output voltage of a charger is

less than the battery voltage
none of the listed here
the same as the battery voltage
higher than the battery voltage

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Electrolysis and Storage Batteries
Which among the following constitutes the major load for an automobile battery ?

Parking lights
Self starter
Spark plugs
Brake light

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Electrolysis and Storage Batteries
When the lead-acid cell is fully charged, the electrolyte assumes _____ appearance

dull
milky
reddish
bright

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Electrolysis and Storage Batteries
Excessive charging a battery tends to

bring about all above changes
increase the internal resistance of the battery
produce gassing
to corrode the positive plates into lead peroxide thereby weakening them physically

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