| 1. | Three cells are connected in series to form a battery. The internal resistance is 0.1 ? each. The internal resistance of the battery is ? | |
|
0.1 ?
|
||
|
0.2 ?
|
||
|
0.3 ?
|
||
|
0.6 ?
|
||
View Answer
Discuss in Forum
Report Question| 2. | The effect of sulphation is that the internal resistance ? | |
|
increases
|
||
|
decreases
|
||
|
remains same
|
||
|
none of the above
|
||
| 3. | The specific gravity of electrolyte is measured by ? | |
|
manometer
|
||
|
a mechanical gauge
|
||
|
hydrometer
|
||
|
psychrometer
|
||
| 4. | The capacity of a lead-acid cell is measured in ? | |
|
amperes
|
||
|
ampere-hours
|
||
|
watts
|
||
|
watt-hours
|
||
| 5. | In a lead-acid cell, lead is called as ? | |
|
positive active material
|
||
|
negative active material
|
||
|
passive material
|
||
|
none of the above
|
||
| 6. | In a lead-acid battery during charging ? | |
|
specific gravity of acid increases
|
||
|
voltage drops
|
||
|
anode becomes whitish in colour
|
||
|
the cell gives out energy
|
||
| 7. | Over charging ? | |
|
produces excessive gassing
|
||
|
loosens the active material
|
||
|
increases the temperature resulting in buckling of plates
|
||
|
all above
|
||
| 8. | Capacity of a battery is expressed in ? | |
|
Ah
|
||
|
Vh
|
||
|
Wh
|
||
|
kWh
|
||
| 9. | Level of electrolyte in a cell should be ...... the level of plates ? | |
|
below
|
||
|
equal to
|
||
|
above
|
||
|
none of the above
|
||
| 10. | The body of Edison cell is made of ? | |
|
bakelite
|
||
|
rubber
|
||
|
nickel plated steel
|
||
|
aluminium
|
||