Tag: #ukmmarineengineering
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EK Motor Mar 2018 (Q8)
With reference to slow speed diesel engine turbocharging: (a) Explain why electrically driven scavenge air blowers are fitted (4) (b) Describe how a turbocharger may be disabled to allow for operation of the main engine in the event of failure of the turbocharger rotor (8) (c) Describe the procedure for running an engine in the…
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EK Electrical Dec 2024 (Q11)
(a) Sketch a wiring diagram of a shore connection for the supply of electrical power to a vessel, showing the phase sequence indicator. (4) (b) Explain the consequences of connecting an electrical shore supply in EACH of the following cases: (i) In the wrong phase sequence; (2) (ii) At a higher voltage; (2) (iii) At…
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EK Electrical Dec 2024 (Q10)
Describe the construction and operation of EACH of the following: (a) Synchronous motor; (5) (b) Induction motor. (5) 10 marks Dec 2024, Dec 2022, Aug 2020 AC Motor Dec 2024 (Q10)
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EK Electrical Dec 2024 (Q9)
Describe, with the aid of a circuit diagram, the operation of an automatic voltage regulator (AVR) which employs the use of thyristors. (10) 10 marks Dec 2024, Dec 2021, Jul 2018 Generator & circuit protection Dec 2024 (Q9)
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EK Electrical Oct 2024 (Q11)
With reference to insulation testing of electrical equipment: (a) State the reasons for insulation testing and why it is carried out on a regular basis (2) (b) Describe the procedure for taking a set of insulation readings on an electric motor in-situ, stating the minimum acceptable readings (6) (c) Explain the term Polarisation Index (2)…
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