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Q3. With reference to static oily water separators, explain EACH of the following:

(a) why the supply pump should be carefully selected and matched to the separator; (2)

(b) how the separator achieves effective separation; (4)

(c) how the physical properties of each of the fluids to be separated affects the rate and effectiveness of separation. (4)

Q4. With reference to pump selection, state any TWO types of pump for EACH of the following applications, stating why they are suitable.

(a) bilge pumping (2) (b) Cargo oil stripping (2)              (c) Sewage sludge (2)

(d) Lubricating oil circulating (2)               (e) Sea water circulating (2)

Q1. With reference to machinery parts under cyclic loading, describe, with the aid of sketches, how the propagation of even the smallest of cracks can lead to total component failure. (10)

Q9. Describe, with the aid of a diagram, a shaft generator that uses a frequency converter. (10)

Q11. With reference to a THREE phase electrical distribution system:

(a) discuss the advantages and disadvantages of an insulated neutral system; (8)

(b) state how an earthed neutral system is earthed and the measures taken to limit the maximum earth fault current. (2)

Q9. With reference to voltage variation profiles caused by load changes imposed on alternating current generators when starting large motors online:

(a) sketch a voltage dip, showing an acceptable recovery time; (2)

(b) state FOUR salient factors that cause the variation in part (a); (4)

(c) outline FOUR salient factors that assist recovery from the deviation shown in part (a). (4)

Q12. With reference to structural fire protection in passenger ship accommodation spaces:

(a) define the meaning of Class A bulkheads, stating the requirements; (3)

(b) discuss the design of ventilation systems to prevent the spread of smoke and fire; (5)

(c) explain how the integrity of the bulkhead is retained with respect to ventilation trunkings, where A Class bulkhead have to be penetrated. (2)

Q14.With reference to drydocking a vessel:

(a) state the pre-docking information that should be given to the drydock authority; (5)

(b) list the items to be inspected once the dock is empty. (5)

Q13. With reference to double hulled oil tankers:

(a) sketch a mid ship cross section; (5)

(b) state the reason this type of design; (1)

(c) state FOUR disadvantages of this type of design. (4)