Practice Test: Question Set - 06
1. Excessive formation of lead sulphate on the surface of the plates happens because of
- (A) Allowing a battery to stand in discharged
condition for a long time
- (B) Topping up with electrolyte
- (C) Persistent undercharging
- (D) All above
2. Cell short circuit results in
- (A) Low sp. gravity electrolyte
- (B) Abnormal high temperature
- (C) Reduced gassing on charge
- (D) All above
3. Shelf life of a small dry cell is
- (A) Equal to that of large dry cell
- (B) Less than that of large dry cell
- (C) More than that of large dry cell
- (D) None of the above
4. All the electrical connections between the battery and vehicle should be by
- (A) Thin aluminium wires
- (B) Thin copper wires
- (C) Rigid cables
- (D) Flexible cables
5. Which of the following primary cells has the lowest voltage?
- (A) Lithium
- (B) Zinc-chloride
- (C) Mercury
- (D) Carbon-zinc
6. Which of the following has lower sp. gravity?
- (A) Dilute H2SO4
- (B) Concentrated H2SO4
- (C) Water
- (D) Any of the above
7. The capacity of a lead-acid cell does not depend on its
- (A) Temperature
- (B) Rate of charge
- (C) Rate of discharge
- (D) Quantity of active material
8. Trickle charging of a storage battery helps to
- (A) Maintain proper electrolyte level
- (B) Increase its reserve capacity
- (C) Prevent sulphation
- (D) Keep it fresh and fully charged
9. The active material of the positive plates of silver-zinc batteries is
- (A) Silver oxide
- (B) Lead oxide
- (C) Lead
- (D) Zinc powder
10. The effect of sulphation is that the internal resistance
- (A) Increases
- (B) Decreases
- (C) Remains same
- (D) None of the above