Tag: #ukmmarineengineering

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With reference to biological sewage systems: (a) Describe the principle of operation of a biological sewage treatment plant; (4) (b) State TWO operational factors that may adversely affect the operation of the plant and how the effects would be indicated; (2) (c) Explain why, on a long sea passage, it is inadvisable to bypass the…

EK Motor Jul 2020 (Q1)

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With reference to diesel engine crankshafts: (a) Explain the causes and effects of torsional vibration; (4) (b) Explain the term critical speed, stating why the engine should not be continuously operated at this speed; (6) (c) Explain the term fatigue cracking, stating, with reasons, TWO factors which have an influence on the likelihood of fatigue…

EK General Aug 2020 (Q3)

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With reference to oil filled stern tubes: Describe, with the aid of a sketch, the principle of operation of a combination seal, which incorporates a wrapped bellows radial face seal and a lip seal. (10) Propeller, shafting & thrusters Aug 2020 (Q3)

EK Motor Dec 2019 (Q9)

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(a) Describe, with the aid of a sketch, the lubrication system of a crosshead type diesel engine (8) (b) Explain the properties required by the lubricating oil in each of the systems described in part (a), stating how these properties compare with those of a lubricating oil used in the crankcase of a trunk piston…

EK Motor Dec 2019 (Q8)

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(a) Write a procedure for the action a duty engineer should take on being called to the engine room during a UMS period in the event of an engine slowdown due to a high cylinder exhaust temperature on the main propulsion engine (6) (b) State, with reason, the possible cause of a high exhaust temperature…

EK General Aug 2020 (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 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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