Author: UKM TUTICORIN

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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 Aug 2020 (Q2)

EK Motor Dec 2019 (Q7)

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With reference to cylinder liner scuffing: (a) Explain how it is caused, stating the method of detection (6) (b) Explain the effects of cylinder liner scuffing (4) (c) Explain how minor scuffing may be treated in order to avoid the need for liner replacement (6) Cylinder liner Dec 2019 (Q7)

EK General Aug 2020 (Q1)

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(a) List the laboratory tests that may be carried out on specimens of steel for ships’ plates, stating reasons for these tests. (6) (b) Outline FOUR features of a fracture in a component which would assist in the verification that a brittle fracture had occurred. (4) Materials Aug 2020 (Q1)

EK Motor Dec 2019 (Q6)

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(a) As Chief engineer, explain how the performance of a main diesel engine may be determined, indicating how the information collected is analyzed to assess the performance of an individual cylinder in relation to the overall engine performance (6) (b) Explain how defective fuel injection may be detected stating, with reasons, the causes of defective…

EK General Jul 2020 (Q8)

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As Chief Engineer Officer appointed to a newly acquired vessel, describe the inspections that should be carried out to ensure satisfactory condition and operation of the ship’s fire fighting equipment. (10) Fire Jul 2020 (Q8)

EK Motor Dec 2019 (Q5)

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Write a report for the engineering superintendent regarding the replacement at sea of bearings on one of the main engine turbochargers, the report must explain how the bearing defects were detected, the likely cause of the damage and the action which has been implemented to prevent further incidents of this type (16) Scavenging & Turbocharger…

EK General Jul 2020 (Q7)

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(a) Sketch a block diagram of a fully automated air conditioning system for accommodation spaces, annotating the relevant temperatures and relative humidities throughout the system. (7) (b) Describe how bacteria are prevented from multiplying to a harmful level in an air conditioning system. (3) Reefer & A/C Jul 2020 (Q7)

EK Motor Dec 2019 (Q4)

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With reference to a closed loop engine exhaust gas SOx scrubber system: (a) Describe, with the aid of a sketch, such a system. (8) (b) State, with reason, the fluid which is used for SOx scrubbing in this system (4) (c) State how the effectiveness of the scrubbing fluid is maintained and how the sludge…

EK General Jul 2020 (Q6)

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With reference to the treatment of domestic water for potable use: (a) describe the principle of operation of a sterilizer that uses silver ions; (4) (b) state the advantages of silver ion sterilization over other methods; (2) (c) state the inspections and maintenance that should be carried out on EACH of the following: (i) fresh…

EK Motor Dec 2019 (Q3)

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