Author: UKM TUTICORIN

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With reference to refrigeration systems. (a) Explain why undercooling of the refrigerant at the condenser outlet is desirable (3) (b) Describe, with the aid of a sketch, how a heat exchanger could be incorporated in the circuit to enhance undercooling (5) (c) Explain the possible consequences of the refrigerant having a dryness fraction at the…

EK General Dec 2022 (Q6)

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(a) Sketch an oily water separator that complies with current MARPOL regulations (5) (b) Describe a monitoring system that ensures that the oil discharge content is below the recommended maximum and that logs and retains data. Also mention any other measures to ensure that illegal discharges are prohibited (5) Bilge, OWS & ORB Dec 2022…

EK General Dec 2022 (Q5)

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With reference to centrifugal pumps. (a) explain how the internal condition may be assessed without having to dismantle the pump (3) (b) state the effects of misalignment between the driving motor and the pump (2) (c) describe with the aid of a sketch how misalignment may be corrected (5) Pumps & system Dec 2022 (Q5)

EK General Dec 2022 (Q4)

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(a) Sketch a hydraulic type of shaft coupling bolt. (4) (b) State the advantages of the arrangement in part (a) compared to conventional bolts. (3) (c) State THREE operational factors that may induce high stress in shaft coupling bolts. (3) Propeller, shafting & thrusters Dec 2022 (Q4)

EK General Dec 2022 (Q3)

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(a) Describe, with the aid of a sketch, the principle of operation of a modern shaft torsion meter. (8) (b) Explain why it is important in terms of hull efficiency to measure and compare shaft torque and speed (2) Propeller, shafting & thrusters Dec 2022 (Q3)

EK General Dec 2022 (Q2)

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(a) State the factors in the storage of Manual Metal Are welding electrodes which will assist in producing good quality welds. (2) (b) Explain the importance of edge preparation before welding. (2) (c) Sketch THREE electric arc welding defects, stating the cause of EACH. (6) Materials Dec 2022 (Q2)

EK General Dec 2022 (Q1)

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(a) Describe the properties of EACH of the following alloys used in marine engineering, giving a practical example for which EACH are suited: (i) Cupro-nickel (2) (ii) White metal (2) (iii) Titanium (2) (b) Discuss the merits of EACH of the following alloys for use in the casting of large propellers: (i) Nickel aluminum bronze.…

EK General Oct 2022 (Q8)

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With reference to fixed fire fighting systems employing fresh water in a high fog or mist explain EACH of the following (a) how the fire is contained and extinguished: (4) (b) the importance of particle size and flow rate; (4) (c) state the means by which the system may be activated (2) Fire Oct 2022…

EK General Oct 2022 (Q7)

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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 Oct 2022 (Q6)

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