Tag: #ekmanagmentwritten

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(a) Materials used for hulls and machinery are subject to stress and strain in service. Define EACH of the following: (i) THREE types of stress (3) (ii) TWO types of strain (2) (b) Describe the tests that may be carried out on steel to be used for ships side plating. (5) 10 marks Oct 2024,…

EK General Jul 2024 (Q8)

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Describe the inspections and tests that should be carried out to ensure satisfactory condition and operation of the ship’s fire fighting equipment. (10) Fire Jul 2024 (Q8)

EK General Jul 2024 (Q7)

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With reference to air compressors for general service use: (a) Explain the principle of operation of a screw type compressor (4) (b) Explain the advantages of screw compressors over reciprocating compressors in terms of running and maintenance (6) Compressed air system Jul 2024 (Q7)

EK General Jul 2024 (Q6)

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With reference to a keyless propeller designed for hydraulic (wet) fit and withdrawal: (a) Describe, with the aid of a sketch, how the propeller is fitted to the tail shaft; (6) (b) State TWO advantages compared to a dry fit; (2) (c) Explain how the thrust is transmitted without the use of a key and…

EK General Jul 2024 (Q5)

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With reference to centrifugal pumps and pumping systems: (a) Explain, with the aid of a diagram, the distinction between Net Positive Suction Head available (NPSHa) and Net Positive Suction Head required (NPSHr) (8) (b) Explain how the NPSHa may be increased by design (2) Pumps & system Jul 2024 (Q5)

EK General Jul 2024 (Q4)

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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 Motor Mar 2022 (Q9)

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With reference to waste heat steam generation systems: (a) Describe, with the aid of a sketch, the economizer circulation system (5) (b) Explain how the economizer circulation pumps are kept cool (3) (c) Describe how the boiler water is maintained in a condition which minimizes scale formation and system corrosion (8) WHRS & Boiler Mar…

EK Motor Mar 2022 (Q8)

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With reference to LNG diesel engine installations: (a) Describe, with the aid of a sketch, a Gas Valve Unit, explaining its purpose and indicating where it is located in the gas train (8) (b) Explain why ventilation and inert gas system must be installed with the engine fuel gas system (4) (c) state why pilot…

EK Motor Mar 2022 (Q7)

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(a) State, with reasons, THREE properties required of a cylinder lubricant for a main engine operating on HFO (6) (b) Describe, with the aid of sketches, an electronically controlled cylinder lubricating system, stating how the timing and quantity of cylinder lubricant is regulated and set. (10) Lubricating oil & system Mar 2022 (Q7)

EK Motor Mar 2022 (Q6)

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