InterviewSolution
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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What are the problems of hydrogen concentration? |
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Answer» If the concentration of hydrogen more than 4% and less than 74% explosion problems will be there. Therefore the concentration of hydrogen is restricted to less than 1% by air changer ventilation system. |
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| 2. |
Write chemical equation for lead acid cell. |
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Answer» PbO2 + H2 SO4 → PbSO4 +2 H2 (during discharge) Pb + SO4 → PbSO4 (during charge) |
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| 3. |
What are the advantages of plante type batteries? |
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Answer» Plante plate type batteries have longer life and can with stand rapid discharge. |
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| 4. |
How H2 O2 generated in lead acid battery? |
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Answer» At end of charge, when most of the Pb is converted. H2 O2 generated from H2O. O2 appears as gas at positive plate. H2 at negative plate, i.e. gassing starts. |
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| 5. |
Why lead acid battery requires so much large initial charging? |
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Answer» Initially for a new battery, negative plate will be PbO instead of Pb. To convert all of them back to Pb, we need so much prolonged initial charging. |
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| 6. |
Is the chemical reaction of plante cells same as tubular lead acid cells? |
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Answer» No. Plante cells having both electrodes are lead (Pb) only. During charging, H2O → H2 + O2 O2 reacts with Pb to form PbO2 + (+ve plate) During discharge, Pb + c →PbSO4 (on -ve plate) While PbO2 → Pb + O2 (on +ve plate). That is converted back to lead. Therefore PbSO4 formed only on -ve plate. That is sulphation problem are reduced by 50% |
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