Category: EK GENERAL

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With reference to multi-tubular heat exchangers, explain how EACH of the following contribute to satisfactory performance: (a) Tube wall thickness (2) (b) Dense population of tubes in the tube plate (2) (c) Tube materials selection (2) (d) Coolant flow rates (2) (e) Unimpeded passage of coolant at entry and exit from the tubes (2) Heat…

EK General Jul 2024 (Q3)

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With reference to propeller shaft support bearings: (a) Describe, with the aid of a sketch, the operation of a tilting pad shaft bearing, indicating how the oil pressure is distributed (b) Explain why this type of bearing evolved, stating its advantages over plain bearings Jul 2024 (Q3)

EK General Jul 2024 (Q2)

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With reference to pneumatically operated control valves: (a) State the reasons for fitting a valve positioner; (4) (b) Describe, with the aid of a sketch, valve hysteresis, stating how it affects the process; (3) (c) Describe how design and routine maintenance can limit hysteresis. (3) Control system Jul 2024 (Q2)

EK General Jul 2024 (Q1)

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(a) Describe the properties of EACH of the following alloys used in marine engineering, giving a practical example for which EACH are suited: (i) Cupro-nickel (2) (ii) White metal (2) (iii) Titanium (2) (b) Discuss the merits of EACH of the following alloys for use in the casting of large propellers: (i) Nickel aluminum bronze.…

EK General Mar 2024 (Q8)

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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) PSC & FSC Mar 2024 (Q8)

EK General Mar 2024 (Q7)

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With reference to bacteria harmful to humans in drinking and washing water: (a) State the constraints placed on the installation and use of systems for shipboard production of fresh water (3) (b) State the maintenance and treatment recommended for fresh water tanks (3) (c) Describe how the entire fresh water system can be made free…

EK General Mar 2024 (Q6)

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With reference to tunnel type bow thrusters: (a) Explain why some vessels are fitted with more than one bow thruster (2) (b) Discuss the options available in terms of prime mover and transmission systems (8) Propeller, shafting & thrusters Mar 2024 (Q6)

EK General Mar 2024 (Q5)

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(a) Describe an Oily Water Separator bilge content discharge monitoring system that ensures that the oil discharge content is below the recommended maximum and that logs and retains data (8) (b) State TWO additional measures that can be taken to ensure that no illegal pumping overboard can take place (2) Bilge, OWS & ORB Mar…

EK General Mar 2024 (Q4)

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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…

EK General Mar 2024 (Q3)

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