Electrolysis and storage of batteries

41. The capacity of a battery is expressed in terms of

current rating
voltage rating
ampere-hour rating
none of the above

Detailed SolutionThe capacity of a battery is expressed in terms of

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42. Which of the following has lower specific gravity

Dilute H2SO4
Concentrated H2SO4
Water
Any of the above

Detailed SolutionWhich of the following has lower specific gravity

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43. 48 ampere-hour capacity would deliver a current of

48 amperes for 1 hour
24 amperes for 2 hours
8 amperes for 6 hours
6 amperes for 8 hours

Detailed Solution48 ampere-hour capacity would deliver a current of

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44. In a lead-acid cell, lead is called as

positive active material
negative active material
passive material
none of the above

Detailed SolutionIn a lead-acid cell, lead is called as

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45. All the electrical connections between the battery and vehicle should be by

thin aluminium wires
thin copper wires
rigid cables
flexible cables

Detailed SolutionAll the electrical connections between the battery and vehicle should be by

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

Brake light
Self starter
Parking lights
Spark plugs

Detailed SolutionWhich among the following constitutes the major load for an automobile battery ?

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47. Extent of corrosion in the underground metal work depends upon

amount of moisture
type of metals
type of soil chemicals
all above factors

Detailed SolutionExtent of corrosion in the underground metal work depends upon

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48. The active material of the positive plates of silver-zinc batteries is

silver oxide
lead oxide
lead
zinc powder

Detailed SolutionThe active material of the positive plates of silver-zinc batteries is

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49. The average charging voltage for alkali cell is about

1 V
1.2 V
1.7 V
2.1 V

Detailed SolutionThe average charging voltage for alkali cell is about

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50. Cells are connected in parallel to

Increase the efficiency
Increase the current capacity
Increase the voltage output
Increase the internal resistance

Detailed SolutionCells are connected in parallel to

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