Category: EK GENERAL

(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 Mar 2019 (Q1)

EK General Dec 2018 (Q8)

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As Chief Engineer Officer, describe the examinations that would be carried out during a safety equipment survey with regards to fire safety. (10) Fire Dec 2018 (Q8)

EK General Dec 2018 (Q7)

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(a) Sketch a line diagram showing the layout and components of a hydraulic system with a variable delivery, pressure compensated pump and accumulator, suitable for the operation of deck machinery (5) (b) Describe the operation of the system sketched in part (a) (5) Deck machinery Dec 2018 (Q7)

EK General Dec 2018 (Q6)

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With reference to a vapor compression refrigeration plant (a) Explain the purpose of EACH of the following (i) Expansion valve (2) (ii) Room thermostat (2) (iii) High pressure cut out (2) (b) Explain why EACH of the following conditions are desirable (i) Superheating at the compression suction (2) (ii) Undercooling at the condenser outlet (2)…

EK General Dec 2018 (Q5)

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With reference to activated fin stabilizers, explain EACH of the following (a) Why such units are preferred to passive tanks in large vessels (3) (b) Why these units are preferred for passenger and fast cargo ships (3) (c) Why partial, rather than maximum damping of ship movement in heavy weather, is advisable for reasons other…

EK General Dec 2018 (Q4)

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With reference to microbial infestation (a) List the engine room system that may be affected by this type of contamination (2) (b) Explain the conditions required for bacteria to evolve (6) (c) Describe how the presence of microbial contamination could be detected (2) Lubricating oil & system Dec 2018 (Q4)

EK General Dec 2018 (Q3)

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(a) Explain how power is transmitted through main propulsion shafting (3) (b) State THREE operational factors that may include high stress in shaft coupling bolts (3) (c) Sketch a hydraulic type of shaft coupling bolt (4) Propeller, shafting & thrusters Dec 2018 (Q3)

EK General Dec 2018 (Q2)

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(a) Describe, with the aid of a sketch, a temperature measuring instrument that uses the principle of operation of a change in resistance with the application of heat (6) (b) Describe how the instrument sketched in part (a) is tested and calibrated (4) Control system Dec 2018 (Q2)

EK General Dec 2018 (Q1)

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