Lithium
Zinc-chloride
Mercury
Carbon-zinc
Answer is Right!
Answer is Wrong!
Detailed SolutionWhich of the following primary cells has the lowest voltage ?
Electrolysis and storage of batteries
2. The capacity of a lead-acid cell depends on
Rate of discharge
Temperature
Density of electrolyte
All above
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Answer is Wrong!
Detailed SolutionThe capacity of a lead-acid cell depends on
3. Internal short circuits are caused by
breakdown of one or more separators
excess accumulation of sediment at the bottom of the cell
both (A) and (B)
none of the above
Answer is Right!
Answer is Wrong!
4. Excessive charging a battery tends to
produce gassing
increase the internal resistance of the battery
to corrode the positive plates into lead peroxide thereby weakening them physically
bring about all above changes
Answer is Right!
Answer is Wrong!
5. Internal resistance of a cell is reduced by
using vent plug to permit gas formed during discharge
increasing the plate area
putting plates very close together
all above methods
Answer is Right!
Answer is Wrong!
Detailed SolutionInternal resistance of a cell is reduced by
6. The following indicate that battery on charge has attained full charge
colour of electrode
gassing
specific gravity
all above
Answer is Right!
Answer is Wrong!
Detailed SolutionThe following indicate that battery on charge has attained full charge
7. During discharge, the active material of both the positive and negative plates is changed to
Pb
PbO2
PbO
PbSO4
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Answer is Wrong!
8. In ______ system the charging current is intermittently controlled at either a maximum or minimum value
two rate charge control
trickle charge
floating charge
an equalizing charge
Answer is Right!
Answer is Wrong!
9. The effect of sulphation is that the internal resistance
increases
decreases
remains same
none of the above
Answer is Right!
Answer is Wrong!
Detailed SolutionThe effect of sulphation is that the internal resistance
10. In constant voltage charging method, the charging current from discharged to fully charged condition
decreases
increases
remains constant
none of the above
Answer is Right!
Answer is Wrong!