Q11. (a) With reference to battery systems for emergency purposes, explain the precautions that must be taken with regard to personnel safety, storage and maintenance. (7)
(b) Explain how batteries are kept at the correct rate of charge. (3)
11. With reference to lithium-ion batteries:
(a) explain why this type of battery has been adopted for shipboard use; (4)
(b) state ONE advantage and ONE disadvantage of lithium-ion batteries; (2)
(c) define EACH of the following:
(i) cell drift; (2) (ii) thermal runaway. (2)
Q7. With reference to storage batteries used on Ships:
(a) Explain the meaning of the term Gel Cell (2)
(b) State how the measure of charge of a conventional Lead Acid battery is established (2)
(c) List FOUR advantages of Alkaline batteries (4)
(d) State how the measure of charge of an Alkaline battery is established (4)
(e) Outline the dangers associated with Lithium-ion batteries. (4)
Q7. (a) Name ONE publication dealing with the storage of ships battery (2)
(b) List SEVEN precautions that should be taken when working in an area where batteries are stored (14)
Q7. With reference to large capacity secondary cell batteries:
(a) State the two types (4)
(b) State four applications onboard ship (4)
(c) Describe the maintenance required. (8)
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