Q9. State the main electrical items covered in a Classification Society periodical survey. (10)
Q10. (a) State FIVE essential electrical services that are able to be operable under fire conditions.(5)
(b) Explain how electric cables for the essential services in part (a) pass through bulkheads whilst maintaining gas tight and water tight integrity. (3)
(c) State the requirements for the cables which supply electrically driven emergency fire pumps.(2)
Q11. With reference to large electrical transformers on board ships:
(a) state where these transformers may be used; (1)
(b) state a typical efficiency range for a transformer; (1)
(c) state the regulations pertaining to transformers; (3)
(d) state the protective devices that are fitted; (2)
(e) describe the maintenance requirements. (3)
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