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EEE :: Electrolysis and Storage of Batteries

Electrolysis and Storage of Batteries - section-1
  1. Extent of corrosion in the underground metal work depends upon

    2. A.

     amount of moisture
    B.

     type of metals
    C.

     type of soil chemicals
    D.

     all above factors

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  2. The average charging voltage for alkali cell is about

    3. A.

     1 V
    B.

     1.2 V
    C.

     1.7 V
    D.

     2.1 V

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  3. Lead-acid cell has a life of nearly charges and discharges

    4. A.

     500
    B.

     700
    C.

     1000
    D.

     1250

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  4. The following indicate that battery on charge has attained full charge

    5. A.

     colour of electrode
    B.

     gassing
    C.

     specific gravity
    D.

     all above

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  5. Which among the following constitutes the major load for an automobile battery ?

    6. A.

     Brake light
    B.

     Self starter
    C.

     Parking lights
    D.

     Spark plugs

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  6. The lead-acid cell should never be discharged beyond

    7. A.

     1.8 V
    B.

     1.9 V
    C.

     2 V
    D.

     2.1 V

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  7. In a lead-acid cell, if the specific gravity of sulphuric acid is 1.8, it will require following ratio of acid to water to get mixture of specific gravity of 1.3

    8. A.

     6 parts of acid to 4 parts of water
    B.

     4 parts of acid to 4 parts of water
    C.

     4 parts of acid to 6 parts of water
    D.

     4 parts of acid to 8 parts of water

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  8. Capacity of dry cells is

    9. A.

     more when it is supplying current for intermittent periods
    B.

     more when it is supplying current for continuous periods
    C.

     unaffected by the type of discharge
    D.

     none of the above

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  9. Persons preparing electrolyte should wear

    10. A.

     goggles or other face shield
    B.

     rubber
    C.

     rubber boots and gloves
    D.

     all above safety devices

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  10. 48 ampere-hour capacity would deliver a current of

    11. A.

     48 amperes for 1 hour
    B.

     24 amperes for 2 hours
    C.

     8 amperes for 6 hours
    D.

     6 amperes for 8 hours

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