Tag: #mca

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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 Motor Oct 2018 (Q3)

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(a) Describe the cause and effects of bacterial attack on crankcase lubricating oil (6) (b) Explain how bacterial attack on crankcase oil may be detected. (4) (c) Describe how a crankcase lubricating oil system may be returned to service following bacterial attack of the lubricating oil (6) Oct 2018 (Q3)

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 Motor Oct 2018 (Q2)

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(a) Explain why Pilot injection is required for a dual fuel engine when burning natural gas (2) (b) Describe, with the aid of a sketch, the arrangements for a dual fuel engine which is capable of burning natural gas on : (i) The Otto cycle (7) (ii) The diesel cycle (7) Oct 2018 (Q2)

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 Motor Oct 2018 (Q1)

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While operating in heavy weather the main engine loses power and misfires. Investigation shows a considerable quantity of water in fuel. The Chief Engineer Officer explained the immediate actions which should be taken to ensure safe operation of the ship. (6) State, with reasons, the possible sources of water entering the fuel storage, handling and…

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 Motor Jul 2018 (Q9)

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(a) Explain how a diesel generator is prepared and selected as a standby generator (8) (b) Write a procedure for checking a diesel generator engine after it has been shut down and before it is returned to standby duty (8) Jul 2018 (Q9)

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 Motor Jul 2018 (Q8)

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