| 1. | Which of the following is a dry storage cell ? | |
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Carbon-zinc cell
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Mercury cell
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Nickel-iron
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Nickel-cadmium cell
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Report Question| 2. | The open circuit voltage of any storage cell depends wholly upon ? | |
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its chemical constituents
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on the strength of its electrolyte
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its temperature
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all above
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| 3. | Capacity of a battery is expressed in ? | |
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Ah
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Vh
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Wh
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kWh
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| 4. | A constant-voltage generator has ? | |
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minimum efficiency
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minimum current capacity
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low internal resistance
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high internal resistance
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| 5. | Which of the following battery is used for air-craft ? | |
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Lead-acid battery
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Nickel-iron battery
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Dry cell battery
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Silver oxide battery
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| 6. | The ampere-hour efficiency of a lead acid cell is normally between ? | |
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20 to 30%
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40 to 50%
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60 to 70%
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90 to 95%
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| 7. | Electrochemical equivalent is usually expressed in ? | |
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milligrams/coulomb
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milligrams/volt
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milligrams/kW
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milligrams/kVA
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| 8. | Negative plate of an Edison cell is made of ? | |
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copper
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lead
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iron
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silver oxide
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| 9. | The current flow through electrolyte is due to the movement of ? | |
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ions
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holes
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electrons
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none of the above
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| 10. | Which of the following primary cells has the lowest voltage ? | |
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Lithium
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Zinc-chloride
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Mercury
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Carbon-zinc
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