Q9. a) Describe, with the aid of a sketch, a main engine cylinder relief valve. (10)
b) List the conditions, which may cause the valves, sketched in (a) to lift. (6)
Q7. (a) Describe, with the aid of a sketch, a main engine cylinder relief valve. (10)
(b) List four conditions which may cause the valves sketched in (a) to lift (6)
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