Category: EK GENERAL

—

by

With reference to pneumatically operated control valves: (a) State the reasons for fitting a valve positioner; (4) (b) Describe, with the aid of a sketch, valve hysteresis, stating how it affects the process; (3) (c) Describe how design and routine maintenance can limit hysteresis. (3) Control system Aug 2020 (Q2)

EK General Aug 2020 (Q1)

—

by

(a) List the laboratory tests that may be carried out on specimens of steel for ships’ plates, stating reasons for these tests. (6) (b) Outline FOUR features of a fracture in a component which would assist in the verification that a brittle fracture had occurred. (4) Materials Aug 2020 (Q1)

EK General Jul 2020 (Q8)

—

by

As Chief Engineer Officer appointed to a newly acquired vessel, describe the inspections that should be carried out to ensure satisfactory condition and operation of the ship’s fire fighting equipment. (10) Fire Jul 2020 (Q8)

EK General Jul 2020 (Q7)

—

by

(a) Sketch a block diagram of a fully automated air conditioning system for accommodation spaces, annotating the relevant temperatures and relative humidities throughout the system. (7) (b) Describe how bacteria are prevented from multiplying to a harmful level in an air conditioning system. (3) Reefer & A/C Jul 2020 (Q7)

EK General Jul 2020 (Q6)

—

by

With reference to the treatment of domestic water for potable use: (a) describe the principle of operation of a sterilizer that uses silver ions; (4) (b) state the advantages of silver ion sterilization over other methods; (2) (c) state the inspections and maintenance that should be carried out on EACH of the following: (i) fresh…

EK General Jul 2020 (Q5)

—

by

(a) Sketch a four ram type steering gear consisting of two fifty per cent torque units that complies with the single failure concept and automatic isolation. (6) (b) Describe how automatic isolation, for the hydraulic circuit sketched in part (a), is achieved within 45 seconds should leakage of system oil occur. (4) Steering & stabilizers…

EK General Jul 2020 (Q4)

—

by

With reference to pump selection, state TWO types of pump for EACH of the following applications, stating why they are suitable: (a) bilge pumping; (2) (b) cargo oil stripping; (2) (c) sewage sludge; (2) (d) lubricating oil circulating; (2) (e) sea water circulating. (2) Pumps & system Jul 2020 (Q4)

EK General Jul 2020 (Q3)

—

by

With reference to propeller cavitation: (a) define cavitation; (2) (b) describe FOUR detrimental effects of propeller cavitation. (8) Propeller, shafting & thrusters Jul 2020 (Q3)

EK General Jul 2020 (Q2)

—

by

Describe, with the aid of a sketch, the principle of operation of a capacitance electrode level measuring transmitter. (10) Control system Jul 2020 (Q2)

EK General Jul 2020 (Q1)

—

by