Author: UKM TUTICORIN

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(a) Sketch a Stress/Strain curve for a mild steel test specimen. (2) (b) With reference to the curve sketched in part (a), explain EACH of the following: (i) Modulus of elasticity; (2) (ii) Percentage elongation; (2) (iii) Ultimate tensile stress; (2) (iv) Yield stress. (2) Materials Oct 2020 (Q1)

EK General Aug 2020 (Q8)

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As Chief Engineer Officer, write a procedure listing recommendations for the safety precautions to be adopted when servicing accommodation lifts. (10) Safety Aug 2020 (Q8)

EK General Aug 2020 (Q7)

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With reference to the on board production of fresh water for domestic purposes: (a) explain the principles of operation of EACH of the following: (i) low heat source evaporator; (2) (ii) flash evaporator; (2) (iii) reverse osmosis. (4) (b) state the constraints placed on the installation and use of systems for shipboard production of fresh…

EK General Aug 2020 (Q6)

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As Chief Engineer Officer appointed to a newly acquired older vessel, compile a list of all the checks that would be required of the ship’s steering gear and associated equipment, given that no handover from the previous owners had taken place. (10) Steering & stabilizers Aug 2020 (Q6)

EK General Aug 2020 (Q5)

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With reference to centrifugal pumps: (a) Describe how EACH of the following improves pump performance: (i) Raising the speed of rotation; (2) (ii) Multi-staging. (2) (b) Explain the advantages of using centrifugal pumps instead of positive displacement pumps for lubricating oil circulating duties. (6) Pumps & system Aug 2020 (Q5)

EK General Aug 2020 (Q4)

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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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in EK Motor

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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in EK Motor

(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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