Q2. With reference to behaviour of fabricated bed plates and frames in services:
A. Identify various forces imposed simultaneously upon them;
B. Explain how engine structure withstands these forces;
C. State how these forces are transferred to ship’s structure
Q7. During recent months It has been necessary to frequently retighten some main engine holding down bolts as the steel chocks have become loose: (a) Explain possible reasons for this. (b) State with reasons why re-chocking using a different material might reduce the Incidence (c) Explain the possible consequences if the situation is allowed to continue unchecked.
Q7. a) Describe, with the aid of a sketch, a main engine holding down system explaining how the design features help prevent excessive stress in the holding down studs (8)
b) Describe, with the aid of a sketch, an engine top bracing arrangement, explaining why they are fitted and checked for operational performance (8)
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