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EEE :: Electrolysis and Storage of Batteries

Electrolysis and Storage of Batteries - section-1
  1. Self charge of a Ni-Fe cell is _____ Edison cell.

    2. A.

     Equal to
    B.

     Less than
    C.

     More than
    D.

     Much more than

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

    3. A.

     allowing a battery to stand in discharged condition for a long time
    B.

     topping up with electrolyte
    C.

     persistent undercharging
    D.

     low level of electrolyte
    E.

     all above

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  3. Life of the Edison cell is at least

    4. A.

     five years
    B.

     seven years
    C.

     eight years
    D.

     ten years

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  4. Cell short circuit results in

    5. A.

     low sp. gravity electrolyte
    B.

     abnormal high temperature
    C.

     reduced gassing on charge
    D.

     all above

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

    6. A.

     Newton’s law
    B.

     Faraday’s law of electromagnetic
    C.

     Faraday’s law of electrolysis
    D.

     Gauss’s law

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  6. A typical output of a solar cell is

    7. A.

     0.1 V
    B.

     0.26 V
    C.

     1.1 V
    D.

     2 V

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  7. The output voltage of a charger is

    8. A.

     less than the battery voltage
    B.

     higher than the battery voltage
    C.

     the same as the battery voltage
    D.

     none of the above

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

    9. A.

     to reduce evaporation of water from electrolyte
    B.

     to exclude dirt and foreign matter from the electrolyte
    C.

     to discharge both of the above functions
    D.

     to discharge none of the above functions

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  9. Specific gravity of electrolyte in Edison cell is

    10. A.

     0.8
    B.

     0.95
    C.

     1.1
    D.

     1.21

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  10. Local action in a battery is indicated by

    11. A.

     excessive gassing under load conditions
    B.

     excessive drop in the specific gravity of electrolyte even when the cell is on open circuit
    C.

     both (A) and (B)
    D.

     none of the above

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