Author: UKM TUTICORIN

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(a) Describe, with the aid of a sketch, a diesel engine air start system and the devices which are fitted to prevent or limit damage in the event of an explosion (8) (b) Explain how an explosion in a diesel engine air start system might occur (4) (c) As Chief Engineer Officer, Outline the actions…

EK Motor Dec 2017 (Q4)

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With reference to diesel engine starting air systems: (a) write instructions for the checking of the starting air system in order to determine the reason for an engine failing to turn over when the starting air system is activated (6) (b) Describe the procedure for checking and preparing a starting air receiver for survey (6)…

EK General Mar 2018 (Q7)

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With reference to a automatic sprinkler systems for fire fighting purposes (a) Explain with the aid of a Heat release versus time diagram, the difference between fire control and fire suppression (6) (b) State the limitation of using glass bulbs to activate sprinkler heads and suggested with reasons, an alternative mechanism (4) Fire Mar 2018…

EK General Mar 2018 (Q6)

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(a) Sketch a diagrammatic arrangement of a fully automatic direct expansion domestic refrigeration system. (5) (b) State, with reasons, FIVE desirable thermodynamic properties of a refrigerant. (5) Reefer & A/C Mar 2018 (Q6)

EK Motor Dec 2017 (Q3)

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With reference to failure of fuel injector nozzle due to burning: (a) State, with reason, THREE possible causes (6) (b) Write a procedure to be used when investigating the cause of fuel injector nozzle burning (6) (c) Describe a system which should be operated in order to minimize the risk of future fuel injector nozzle…

EK Motor Dec 2017 (Q2)

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As chief engineer officer, write a report to the engineering superintendent regarding the failure of a main engine cylinder liner to crack which resulted in water leakage from the cooling space into the cylinder. The report must explain how the defect was detected, the immediate action taken, the rectifying action taken to ensure that the…

EK General Mar 2018 (Q5)

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(a) State the regulations pertaining to the main and auxiliary steering gear with reference to EACH of the following (i) Rudder angle and time of operation (2) (ii) Electrical supply (3) (b) With reference to a hydraulic steering gear, explain EACH of the following (i) The factor that may contribute to the failure of a…

EK General Mar 2018 (Q4)

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(a) State the affinity laws for a centrifugal pump (3) (b) State the effects on the pump affinity laws of fitting a slightly smaller diameter impeller (2) (c) Explain, with the aid of a head versus flow diagram, why a two speed pump is preferable to throttling where high and low capacities are demanded for…

EK Motor Dec 2017 (Q1)

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(a) Describe with the aid of a sketch, a system for burning gaseous fuel in a two stroke diesel engine, indicating safety features fitted and explaining why the gas has to be injected into the cylinder rather than mixed with the combustion air outside of the cylinders (12) (b) Define the term Methane slip, explaining…

EK General Mar 2018 (Q3)

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