Category: EK GENERAL

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With reference to refrigeration systems: (a) Explain why undercooling of the refrigerant at the condenser outlet is desirable; (3) (b) Describe, with the aid of a sketch, how a heat exchanger could be incorporated in the circuit to enhance undercooling (5) (c) Explain the possible consequences of the refrigerant having a dryness fraction at the…

EK General Jul 2018 (Q5)

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(a) Sketch the hydraulic circuit for a ram type steering gear that complies with the single failure concept and automatic isolation. (6) (b) Describe how automatic isolation, for the hydraulic circuit sketched in part (a), is achieved within 45 seconds should leakage of system oil occur. (4) Steering & stabilizers Jul 2018 (Q5)

EK General Jul 2018 (Q4)

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State the inspections, instructions and maintenance that should be carried out on main sea water pipelines, strainers and ship’s side valves to minimize the risks of engine room flooding. (10) Materials Jul 2018 (Q4)

EK General Jul 2018 (Q3)

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With reference to heat exchangers, describe how EACH of the following design aspects promote heat transfer: (a) material selection; (5) (b) flow patterns; (3) (c) extended surface areas. (2) Heat exchanger Jul 2018 (Q3)

EK General Jul 2018 (Q2)

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As Chief Engineer Officer on board a vessel which has lost 50 liters of lubricating oil from the stern tube system to sea overnight, write a report to the Superintendent Engineer outlining the actions taken to rectify the leakage and any other further recommendations. (10) Propeller, shafting & thrusters Jul 2018 (Q2)

EK General Jul 2018 (Q1)

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Q1 (a) State the factors in the storage of Manual Metal Arc welding electrodes which will assist in producing good quality welds. (2) (b) Explain the importance of edge preparation before welding. (2) (c) Sketch TWO methods of plate edge preparation. (2) (d) A hairline crack is detected in a pipe, as Chief Engineer Officer,…

EK General Mar 2018 (Q8)

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Following bunkering operations, it is discovered that the vessel received a quantity which was short of what was stipulated in the pre-delivery document. As Chief Engineer Officer, with a note of protest to the Master of the bunkering vessel (10) Duties & watch-keeping Mar 2018 (Q8)

EK General Mar 2018 (Q7)

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With reference to a automatic sprinkler systems for fire fighting purposes (a) Explain with the aid of a Heat release versus time diagram, the difference between fire control and fire suppression (6) (b) State the limitation of using glass bulbs to activate sprinkler heads and suggested with reasons, an alternative mechanism (4) Fire Mar 2018…

EK General Mar 2018 (Q6)

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(a) Sketch a diagrammatic arrangement of a fully automatic direct expansion domestic refrigeration system. (5) (b) State, with reasons, FIVE desirable thermodynamic properties of a refrigerant. (5) Reefer & A/C Mar 2018 (Q6)

EK General Mar 2018 (Q5)

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