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.Management Sciences
Category: Electrolysis and Storage of Batteries
When a lead-acid battery is in fully charged condition, the color of its positive plate is__________?
A. dark grey
B. brown
C. dark brown
D. none of above
Life of the batteries is in the following ascending order____________?
A. Lead-acid cell, Edison cell, Nickel cadmium cell
B. Lead-acid cell, Nickel-cadmium cell, Edison cell
C. Edison cell, Nickel-cadmium cell, lead-acid cell
D. Nickel-cadmium cell, Edison cell, lead-acid cell
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
Battery container should be acid resistance, therefore it is made up of___________?
A. glass
B. plastic
C. wood
D. all above
A dead storage battery can be revived by___________?
A. adding distilled water
B. adding so-called battery restorer
C. a dose of H2SO4
D. none of the above
When two batteries are connected in parallel, it should be ensured that___________?
A. they have same e.m.f.
B. they have same make
C. they have same ampere-hour capacity
D. they have identical internal resistance
Following will occur if level of electrolyte falls below plates____________?
A. capacity of the cell is reduced
B. life of the cell is reduced
C. open plates are converted to lead sulphate
D. all above
Short circuiting of a cell may be caused____________?
A. buckling of plates
B. faulty separators
C. lead particles forming circuit between positive and negative plates
D. excessive accumulation of sediment
E. any one of above
The capacity of a lead-acid cell does not depend on its___________?
A. temperature
B. rate of charge
C. rate of discharge
D. quantity of active material
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