Electrolysis Storage of Batteries(2nd)

Specific gravity of electrolyte in Edison cell is

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0.95
0.8
1.1
1.21

Local action in a battery is indicated by

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both (A) and (B)
excessive gassing under load conditions
none of the above
excessive drop in the specific gravity of electrolyte even when the cell is on open circuit

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

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none of above
dark brown
dark grey
brown

A typical output of a solar cell is

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1.1 V
0.26 V
0.1 V
2 V

In a lead-acid battery the energy is stored in the form of

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chemical energy
charged ions
electromagnetic energy
electrostatic energy

Undercharging

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Reduces specific gravity of the electrolyte
Increases the temperature
Increases specific gravity of the electrolyte
Produces excessive gassing

Which of the following primary cells has the lowest voltage ?

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Mercury
Carbon-zinc
Lithium
Zinc-chloride

Hydrogen evolved during charging produces explosive mixture when it is more than

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4%
8%
2%
6%

Capacity of a battery.is expressed in

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Wh
Ah
kWh
Vh

The e.m.f. of an Edison cell, when fully charged, is nearly

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1.4 V
0.9 V
1 V
0.8 V

Self charge of a Ni-Fe cell is _____ Edison cell.

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More than
Equal to
Much more than
Less than

In a battery cover is placed over the element and sealed to the top of the battery container. This is done

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to reduce evaporation of water from electrolyte
to exclude dirt and foreign matter from the electrolyte
to discharge both of the above functions
to discharge none of the above functions

The capacity of a battery is expressed in terms of

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current rating
none of the above
ampere-hour rating
voltage rating

Cell short circuit results in

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abnormal high temperature
reduced gassing on charge
all above
low sp. gravity electrolyte

The output voltage of a charger is

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higher than the battery voltage
the same as the battery voltage
less than the battery voltage
none of the above

All the electrical connections between the battery and vehicle should be by

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thin aluminium wires
flexible cables
rigid cables
thin copper wires

It is noticed that during discharging the following does not happen

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voltage of the cell decreases
specific gravity of H?SO? decreases
the cell absorbs energy
both anode and cathode become PbS04

“The mass of an ion liberated at an electrode is directly proportional to the quantity of electricity”.
The above statement is associated with

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Gauss’s law
Faraday’s law of electromagnetic
Newton’s law
Faraday’s law of electrolysis

Life of the Edison cell is at least

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ten years
eight years
five years
seven years

Excessive formation of lead sulphate on the surface of the plates happens because of

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allowing a battery to stand in discharged condition for a long time
low level of electrolyte
topping up with electrolyte
persistent undercharging
all above

Electrolysis Storage of Batteries(2nd) : Question 1 of 20