Category: EK ELECTRICS

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With reference to a THREE phase electrical distribution system (a) Explain the advantages and disadvantages of an insulated neutral system (8) (b) State how an earthed neutral system is earthed and the measures taken to limit the maximum earth fault current (2) Generator & circuit protection Jul 2017 (Q11)

EK Electrical Jul 2017 (Q10)

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Describe, with the aid of a block diagram, the operation of a load sensing electronic governor controller for an AC generator. (10) Governor Jul 2017 (Q10)

EK Electrical Jul 2017 (Q9)

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With reference to automatic power management system for control of operation of main switchboards and generators (a) List the features that power management system controls in order to comply with the requirement of the vessel (7) (b) Explain how the main generator and switchboard would be controlled following a failure of power management system (3)…

EK Electrical Mar 2017 (Q11)

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With reference to the protection of electrical equipment in a distribution system (a) State the aims of the protection devices. (3) (b) List the parameters that are monitored and acted upon by the protection devices (4) (c) State, with reason, THREE causes of electrical fires (3) Electrical safety Mar 2017 (Q11)

EK Electrical Mar 2017 (Q10)

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During a complete loss of electrical power, essential vital services can be maintained by means of an Uninterrupted power supply (UPS) (a) Describe, with the aid of a block diagram, the operation of an AC input UPS arrangement (7) (b) List SIX essential services that UPS may support. (3) Batteries & Emco power supplies Mar…

EK Electrical Mar 2017 (Q9)

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