Tag: #ekmanagmentwritten

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With reference to insulation testing of electric equipments: (a) State the reasons for insulation testing and why it is carried out on 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)…

EK Electrical Oct 2021 (Q10)

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(a) State the consequences of using a DOL starters for comparatively large sized AC induction motors (2) (b) Describe, with the aid of a sketch, an electronic soft starting system that may be used for large sized AC induction motors (8) Oct 2021 (Q10)

EK Electrical Oct 2021 (Q9)

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With reference to overcurrent protection: (a) Explain THREE methods of protection, stating where each may be used. (6) (b) Explain with the aid of a diagram the meaning of inverse current time characteristics. (4) Oct 2021 (Q9)

EK Electrical Jul 2021 (Q11)

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(a) With reference to battery systems for emergency purposes, explain the precautions that must be taken with regards to personnel safety, storage and maintenance (7) (b) Explain how batteries are kept at the correct rate of charge (3) Jul 2021 (Q11)

EK Electrical Jul 2021 (Q10)

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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) Jul 2021 (Q10)

EK Electrical Jul 2021 (Q9)

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(a) Describe, with the aid of a sketch, a static excitation system for a generator (8) (b) Explain TWO advantages of static excitation (2) Jul 2021 (Q9)

EK Electrical Mar 2021 (Q11)

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(a) Explain the principle of operation of an insulation resistance test, starting why the test is carried out on regular basis (6) (b) Describe how EACH of the following electrical tests is carried out (2) (i) Resistance (2) (ii) Continuity (2) Mar 2021 (Q11)

EK Electrical Mar 2021 (Q10)

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With reference to large electrical transformers on board ships (a) State where these transformers may be used (1) (b) State a typical efficiency range for a transformer (1) (c) State the regulations pertaining to transformers (3) (d) State the protective devices that are fitted (2) (e) Describe the maintenance requirements (3) Mar 2021 (Q10)

EK Electrical Mar 2021 (Q9)

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(a) Describe, with the aid of a sketch, the constructional details of a squirrel cage rotor as fitted in an induction motor (7) (b) Explain why some rotors have a double cage (3) Mar 2021 (Q9)

EK Electrical Dec 2020 (Q11)

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