Q4. Describe, with the aid of a sketch, a typical single element temperature control for a large lubricating oil system. (16)
Q6. (a) State FOUR different causes of earth faults. (8)
(b) For EACH cause stated in (a), explain how the fault is rectified. (8)
Q7. (a) Describe how you would overhaul an electric motor that has been flooded with sea water (8)
(b) Explain how to check the insulation resistance of the motor, stating the minimum acceptable value (8)
Q8. (a) Describe, with the aid of a sketch, a freeing-port. (8)
(b) Explain how freeing-ports assist in maintaining the stability of a ship. (8)
Q9. Explain the meaning and purpose of EACH of the following ship terms:
(a) Bilge keel (4)
(b) Freeing port (4)
(c) Longitudinal (4)
(d) Frame (4)
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