UKM Tuticorin

Category: EK ELECTRICS

  • EK Electrical Dec 2019 (Q11)

    EK Electrical Dec 2019 (Q11)

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    (a) Explain the meaning of EACH of the following types of electrical equipment (i) Intrinsically safe (2) (ii) Flame proof (2) (iii) Increased safety (2) (iv) Pressurised enclosure (2) (b) State two types of lighting equipment that may be installed in the pump room areas of a crude petroleum carrier (2) Electrical safety Dec 2019…

  • EK Electrical Dec 2019 (Q10)

    EK Electrical Dec 2019 (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) AC Starters Dec 2019 (Q10)

  • EK Electrical Dec 2019 (Q9)

    EK Electrical Dec 2019 (Q9)

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    UKM TUTICORIN
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    With reference to the protective devices fitted to a main alternating current generator, explain EACH of the following (a) Overcurrent and short circuit protection (2) (b) Generator negative phases sequence (2) (c) Loss of field (Excitation) (2) (d) Under voltage (2) (e) Reverse power (2) Generator & circuit protection Dec 2019 (Q9)

  • EK Electrical Oct 2019 (Q11)

    EK Electrical Oct 2019 (Q11)

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    UKM TUTICORIN
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    With reference to electrical short circuits: (a) State, with reasons, THREE factors that will influence the severity of a short circuit; (6) (b) Explain the role of reactance when selecting protective devices. (4) Electrical safety Oct 2019 (Q11)

  • EK Electrical Oct 2019 (Q10)

    EK Electrical Oct 2019 (Q10)

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    UKM TUTICORIN
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    (a) Describe the principle of operation of a ship’s Impressed Current Cathodic Protection system. (6) (b) State the routine maintenance that should be carried out on an Impressed Current Cathodic Protection system. (4) Control engineering Oct 2019 (Q10)

  • EK Electrical Oct 2019 (Q9)

    EK Electrical Oct 2019 (Q9)

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    UKM TUTICORIN
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    (a) Sketch a circuit diagram of a self excited a.c. generator. (5) (b) Describe the operation of the circuit sketched in part (a). (5) AC Generator Oct 2019 (Q9)

  • EK Electrical Jul 2019 (Q11)

    EK Electrical Jul 2019 (Q11)

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    With reference to the protection of electrical power circuits: (a) Explain discrimination, describing how it is affected (5) (b) State, with reasons, the type of fuse used for protection (3) (c) Explain Preferential tripping (2) Generator & circuit protection Jul 2019 (Q11)

  • EK Electrical Jul 2019 (Q10)

    EK Electrical Jul 2019 (Q10)

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    With reference to three phase induction motor starters (a) Explain why star-delta starters are employed (2) (b) Explain what is meant by reduced voltage starting in context with star-delta starting (2) (c) Explain, with the aid of power circuit, the sequence of star-delta. (6) AC Starters Jul 2019 (Q10)

  • EK Electrical Jul 2019 (Q9)

    EK Electrical Jul 2019 (Q9)

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    UKM TUTICORIN
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    With reference to voltage variation profiles caused by load changes imposed on alternating current generators when starting large motors on line: (a) Sketch a voltage dip, showing an acceptable recovery time (2) (b) State four salient factors that cause the variations in part ‘a’ (4) (c) Outline FOUR salient factors that assist recovery from the…

  • EK Electrical Mar 2019 (Q11)

    EK Electrical Mar 2019 (Q11)

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    UKM TUTICORIN
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    With reference to electrical equipment in potentially flammable atmospheres: (a) Explain why conventional equipment is considered hazardous (2) (b) Explain the concept of intrinsic safety (3) (c) Describe, with the aid of a sketch barrier for an electrical power supply. (5) Explosion protection Mar 2019 (Q11)