Q3. With reference to a main engine jacket water cooling system:
(a) Explain, with the aid of sketches, how the jacket water temperature is maintained at its optimum value. (8)
(b) State the possible effects on the engine if the jacket water temperatures are maintained outside the desired value. (8)
Q4. Describe, with the aid of a sketch, a typical single element temperature control for a large lubricating oil system. (16)
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