| 1. | Shelf life of a small dry cell is ? | |
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equal to that of large dry cell
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less than that of large dry cell
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more than that of large dry cell
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none of the above
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Report Question| 2. | In electroplating, the character of metal deposited is affected by ? | |
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surface preparation
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metal-ion concentration
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structure of the metal
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all of the above
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| 3. | The terminal voltage, when the battery is being charged, decreases with ? | |
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increasing temperature
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increasing charging rate
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increasing state of charge
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all of the above
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| 4. | On overcharging a battery ? | |
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it will bring about chemical change in active materials
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it will increase the capacity of the battery
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it will raise the specific gravity of the electrolyte
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none of the above will occur
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| 5. | A typical output of a solar cell is ? | |
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0.1 V
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0.26 V
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1.1 V
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2 V
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| 6. | Specific gravity of electrolyte in Edison cell is ? | |
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0.8
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0.95
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1.1
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1.21
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| 7. | The efficiency of a solar cell may be in the range ? | |
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2 to 5%
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10 to 15%
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30 to 40%
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70 to 80%
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| 8. | The active material of the positive plates of silver-zinc batteries is ? | |
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silver oxide
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lead oxide
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lead
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zinc powder
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| 9. | Find the odd one out ? | |
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lead-acid cells
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solar cells
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fuel cells
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dry cells
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| 10. | Galvanising is coating of ? | |
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chromium
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lead
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zinc
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tin
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