| 1. | Internal short circuits are caused by ? | |
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breakdown of one or more separators
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excess accumulation of sediment at the bottom of the cell
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both (a) and (b)
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none of the above
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Report Question| 2. | Extent of corrosion in the underground metal work depends upon ? | |
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amount of moisture
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type of metals
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type of soil chemicals
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All above factors
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| 3. | 48 ampere-hour capacity would deliver a current of ? | |
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48 amperes for 1 hour
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24 amperes for 2 hours
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8 amperes for 6 hours
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6 amperes for 8 hours
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| 4. | Coating usually recommended for electrical contact is that of ? | |
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lead plating
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gold
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chromium
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silver
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| 5. | Internal resistance of a cell is due to ? | |
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resistance of electrolyte
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electrode resistance
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surface contact resistance between electrode and electrolyte
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all above
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| 6. | The energy in a lead-acid battery is stored in the form of ? | |
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nuclear energy
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electrostatic charge
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solar energy
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chemical energy
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| 7. | Ampere hour capacity of an industrial battery is based on ...... hours discharge rate ? | |
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8
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12
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16
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24
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| 8. | The current in a chemical cell is a movement of ? | |
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positive ions only
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positive and negative ions
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negative ions only
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positive-hole charges
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| 9. | Capacity of dry cells is ? | |
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more when it is supplying current for intermittent periods
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more when it is supplying current for continuous periods
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unaffected by the type of discharge
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none of the above
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| 10. | Tickle charge is required for ? | |
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primary cells
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lead-acid batteries
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nickel-iron cells
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all of the above
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