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Electrolysis and Storage of Batteries - Interview Questions and Answers

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16. As compared to constant-current system, the constant-voltage system of charging a lead acid cell has the advantage of
A. reducing time of charging
B. increasing cell capacity
C. both (a) and (b)
D. avoiding excessive gassing
Explanation:
17. The storage battery generally used in electric power station is
A. nickel-cadmium battery
B. zinc-carbon battery
C. lead-acid battery
D. none of the above
Explanation:
18. The active materials on the positive and negative plates of a fully charged lead-acid battery are
A. lead and lead peroxide
B. lead sulphate and lead
C. lead peroxide and lead
D. none of the above
Explanation:
19. During charging the specific gravity of the electrolyte of a lead-acid battery
A. increases
B. decreases
C. remains the same
D. becomes zero
Explanation:
20. The capacity of a battery is expressed in terms of
A. current rating
B. voltage rating
C. ampere-hour rating
D. none of the above
Explanation:
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