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Q2. (a) Describe, with the aid of a Strain versus Time diagram, how a creep test is carried out to determine the strain rate of the material under test. (6)

(b) Explain EACH of the stages sketched in the diagram in part (a). (4)

Q2. With reference to fuel oil viscosity:

(a) explain why correct fuel oil viscosity is necessary; (2)

(b) describe TWO methods for the measurement of viscosity that are suitable for the inclusion into a pneumatic or electronic control system; (6)

(c) state, with reasons, a control action for a viscosity controller. (2)

Q4. (a) Define propeller slip, explaining how it is calculated. (2)

(b) State, with reasons, FOUR conditions which will affect the propeller slip. (8)

Q5 . With reference to the design, construction and materials used in the manufacture of plate type heat exchangers, explain why, in most cases, they are superior to tubular type heat exchangers. (10)

Q5. With reference to Marine Growth Prevention Systems, which incorporate impressed current anodes fitted in the sea boxes or sea strainers of main seawater cooling water systems:

(a) Explain how the system protects steel pipework against marine growth and corrosion: (6)

(b) Explain how the effectiveness of the system can be ascertained: (2)

(c) State the advantages this system has over one which makes use of biocides. (2)

Q6. As Chief Engineer Officer appointed to a newly acquired older vessel, compile a list of all the checks that would be required of the ship’s steering gear and associated equipment, given that no hand over from the previous owners had taken place. (10)

Q6. (a) Sketch a diagrammatic arrangement of a fully automatic direct expansion domestic refrigeration system which supplies a number of cold rooms. (5)

(b) State, with reasons, FIVE desirable thermodynamic properties of a refrigerant. (5)

Q8. List TEN checks that a chief engineer officer should make prior to a port state control inspection of the engine room and its equipment. (10)