During charging the specific gravity of the electrolyte of a lead-acid battery

Related Mcqs:

1. 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

   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

2. When the specific gravity of the electrolyte of a lead-acid cell is reduced to 1.1 to 1.15 the cell is in___________?

   A. charged state
   B. discharged state
   C. both (A) and (B)
   D. active state

3. The common impurity in the electrolyte of lead-acid battery is_____________?

   A. chlorine
   B. dust particles
   C. lead crystals
   D. iron

4. In a lead-acid cell dilute sulfuric acid (electrolyte) approximately comprises the following__________?

   A. one part H2O, three parts H2SO4
   B. two parts H2O, two parts H2SO4
   C. three parts H2O, one part H2SO4
   D. all H2S04

5. During the charging of a lead-acid cell__________?

   A. its voltage increases
   B. it gives out energy
   C. its cathode becomes dark chocolate brown in colour
   D. specific gravity of H2SO4 decreases

6. During the idle period of the battery, strong electrolyte tends to change the active material of the cell into____________?

   A. Pb02
   B. PbSC-4
   C. PbO
   D. Pb

7. The specific gravity of electrolyte is measured by____________?

   A. manometer
   B. a mechanical gauge
   C. hydrometer
   D. psychrometer

8. Following will happen if the specific gravity of electrolyte becomes more than 1.23

   A. Loss of capacity
   B. Loss of life
   C. Corrosion of the grids of the plate
   D. All above

9. Specific gravity of electrolyte in Edison cell is_____________?

   A. 0.8
   B. 0.95
   C. 1.1
   D. 1.21

10. Electrolyte used in a lead-acid cell is__________?

    A. NaOH
    B. onlyH2S04
    C. only water
    D. dilute H2SO4