Q9. Describe, with the aid of a diagram, a shaft generator that uses a frequency converter. (10)
Q10. (a) Sketch a circuit diagram of an emergency generator power supply and distribution system, indicating the essential services provided. (6)
(b) State the emergency generator regulations. (4)
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)
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