Power Sources – Exercise – 1

Power Sources » Exercise – 1

1. Active materials of a lead-acid cell are :

(a) lead peroxide
(b) sponge lead
(c) dilute sulphuric acid
(d) all the above

Answer
Answer : (d)
Explanation
Explanation : No answer description available for this question. Let us discuss.
Discuss
Discuss : Write your answer. Click here.

2. During the charging of a lead-acid cell :

(a) its cathode becomes dark chocolate brown in colour
(b) its voltage increases
(c) it gives out energy
(d) specific gravity of H2SO4is decreased

Answer
Answer : (b)
Explanation
Explanation : No answer description available for this question. Let us discuss.
Discuss
Discuss : Write your answer. Click here.

3. The ratio of Ah efficiency to Wh efficiency of a lead-acid cell is :

(a) always less than one
(b) just one
(c) always greater than one
(d) either (a) or (b)

Answer
Answer : (c)
Explanation
Explanation : No answer description available for this question. Let us discuss.
Discuss
Discuss : Write your answer. Click here.

4. The capacity of a cell is measured in :

(a) watt-hours
(b) watts
(c) amperes
(d) ampere-hours

Answer
Answer : (d)
Explanation
Explanation : No answer description available for this question. Let us discuss.
Discuss
Discuss : Write your answer. Click here.

5. The capacity of a lead-acid cell does NOT depend on its :

(a) rate of charge
(b) rate of discharge
(c) temperature
(d) quantity of active material

Answer
Answer : (a)
Explanation
Explanation : No answer description available for this question. Let us discuss.
Discuss
Discuss : Write your answer. Click here.

Related Posts

  • Power Sources - 5Power Sources » Exercise - 15. The capacity of a lead-acid cell does NOT depend on its : (a) rate of charge (b) rate of discharge (c) temperature (d) quantity of active material
    Tags: capacity, lead-acid, cell, active, basic, electrical, engineering
  • Power Sources - 1Power Sources » Exercise - 1 1. Active materials of a lead-acid cell are : (a) lead peroxide (b) sponge lead (c) dilute sulphuric acid (d) all the above
    Tags: active, lead-acid, cell, basic, electrical, engineering
  • Power Sources - 3Power Sources » Exercise - 13. The ratio of Ah efficiency to Wh efficiency of a lead-acid cell is : (a) always less than one (b) just one (c) always greater than one (d) either (a) or (b)
    Tags: efficiency, lead-acid, cell, basic, electrical, engineering
  • Power Sources - 2Power Sources » Exercise - 12. During the charging of a lead-acid cell : (a) its cathode becomes dark chocolate brown in colour (b) its voltage increases (c) it gives out energy (d) specific gravity of H2SO4 is decreased
    Tags: cell, lead-acid, charging, basic, electrical, engineering
  • Power Sources - 6Power Sources » Exercise - 16. As compared to constant-current system, the constant-voltage system of charging a lead-acid cell has the advantage of : (a) avoiding excessive gassing (b) reducing time of charging (c) increasing cell capacity (d) both (b) and (c)
    Tags: charging, cell, lead-acid, capacity, basic, electrical, engineering