In a battery cover is placed over the element and sealed to the top of the battery container. This is done
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
Answer: Option C
A. charged state
B. discharged state
C. both (A) and (B)
D. active state
During charging the specific gravity of the electrolyte of a lead-acid battery
A. increases
B. decreases
C. remains the same
D. becomes zero
While preparing electrolyte for a lead-acid battery
A. water is poured into acid
B. acid is poured into water
C. anyone of the two can be added to other chemical
D. none of the above
The ratio of ampere-hour efficiency to watt-hour efficiency of a lead-acid cell is
A. just one
B. always greater than one
C. always less than one
D. none of the above
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