| 1. | The capacity of a lead-acid cell depends on ? | |
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rate of discharge
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temperature
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density of electrolyte
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all above
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Report Question| 2. | Cells are connected in series in order to ? | |
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increase the voltage rating
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increase the current rating
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increase the life of the cells
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none of the above
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| 3. | During the charging of a lead-acid cell ? | |
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its voltage increases
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it gives out energy
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its cathode becomes dark chocolate brown in colour
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specific gravity of H2S04 decreases
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| 4. | When the lead-acid cell is fully charged, the electrolyte assume ..... appearance ? | |
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dull
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reddish
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bright
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milky
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| 5. | The e.m.f. of an Edison cell, when fully charged is nearly ? | |
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1.4V
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1 V
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0.9 V
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0.8 V
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| 6. | During discharge, the active material of both the positive and negative plates is changed to ? | |
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Pb
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Pb02
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PbO
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PbSO4
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| 7. | When two cells of unequal voltages are in parallel, the e.m.f. of the combination is equal to the e.m.f. of the cell ? | |
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small
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large
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any of the above
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none of the above
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| 8. | Which among the following constitutes the major load for an automobile battery ? | |
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Brake light
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Self starter
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Parking lights
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Spark plugs
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| 9. | Which test is used to ascertain whether the battery plates are defective or not ? | |
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Open volt test
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Cadmium test
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High discharge test
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Sp. gravity test
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| 10. | Which of the following material is used in solar cells ? | |
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Barium
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Silicon
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Silver
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Selenium
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