Category: EK GENERAL

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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 General Mar 2018 (Q3)

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With reference to main propulsion shaft systems: (a) Describe a method of hydraulic jacking to check bearing loads (5) (b) sketch the bearing load versus shaft lift dial gauge reading graph obtained by the method described in part (a), explaining the graph and how the characteristic of bearing load is obtained (5) Propeller, shafting &…

EK General Mar 2018 (Q2)

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(a) Explain EACH of the following control items: (i) Cascade (2) (ii) Split range (2) (b) Describe, with the aid of a sketch, a control system that may be enhanced by the inclusion of cascade control (6) Control system Mar 2018 (Q2)

EK General Mar 2018 (Q1)

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With reference to machinery parts under cyclic loading, describe, with the aid of sketches, how the propagation of even the smallest of cracks can lead to total component failure (10) Materials Mar 2018 (Q1)

EK General Dec 2017 (Q8)

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With reference to fixed installation for machinery space fires: (a) sketch a CO2 bottled system (5) (b) Explain how the system sketched in part (a) is protected from overpressure (2) (c) Describe the periodic maintenance required (3) Fire Dec 2017 (Q8)

EK General Dec 2017 (Q7)

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The International Management Code for the Safe Operation of Ships and for Pollution Prevention, is commonly referred to as the ISM code. (a) Explain the objectives of ISM and how they are achieved (5) (b) List FIVE emergency scenarios for which contingency plans may be developed under ISM with respect to the engine room (5)…

EK General Dec 2017 (Q6)

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With reference to pneumatic instrument and control systems: (a) Sketch a control air dryer as fitted downstream from the instrument air compressor or reducing valve (6) (b) Explain the operation of the dryer sketched in part (a) (4) Control system Dec 2017 (Q6)

EK General Dec 2017 (Q5)

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(a) State the regulation 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 hydraulic steering gear, explain EACH of the following (i) The factors that may contribute to the failure of a hydraulic…

EK General Dec 2017 (Q4)

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With reference to centrifugal pumps: (a) Explain the operating principle of a centrifugal pump and why it is unnecessary to fit a relief valve to it; (4) (b) State two impeller types and which type of application they would be best suited for; (2) (c) Explain why cavitation occurs and how to possibly reduce by…

EK General Dec 2017 (Q3)

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