UKM Tuticorin

Category: EK ELECTRICS

  • EK Electrical Dec 2020 (Q9)

    EK Electrical Dec 2020 (Q9)

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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) Dec 2020 (Q9)

  • EK Electrical Oct 2020 (Q11)

    EK Electrical Oct 2020 (Q11)

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    (a) Explain, with the aid of a sketch, the principle of operation of an earth leakage detection system of the instrument type. (6) (b) Explain why an insulated neutral system is used extensively on board ships. (2) (c) State, with reasons, why a single earth fault on an insulated neutral system should always be cleared…

  • EK Electrical Oct 2020 (Q10)

    EK Electrical Oct 2020 (Q10)

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    UKM TUTICORIN
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    With reference to star delta starters used for three phase induction motors: (a) Explain in detail why this type of starter is employed; (4) (b) Explain, with the aid of a circuit diagram, the sequence of operation of a star delta starter. (6) Oct 2020 (Q10)

  • EK Electrical Oct 2020 (Q9)

    EK Electrical Oct 2020 (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) Oct 2020 (Q9)

  • EK Electrical Aug 2020 (Q11)

    EK Electrical Aug 2020 (Q11)

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    UKM TUTICORIN
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    (a) Sketch a circuit diagram of an emergency generator power supply and distribution system, indicating the essential services provided at 440 volts ac, 220 volts ac and 24 volts dc. (6) (b) State the regulations pertaining to the emergency generator. (4) Aug 2020 (Q11)

  • EK Electrical Aug 2020 (Q10)

    EK Electrical Aug 2020 (Q10)

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    UKM TUTICORIN
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    With reference to a.c switchboards: (a) State, with reasons, the protective devices that are fitted; (5) (b) State why a breaker may fail to open under prolonged low voltage conditions; (2) (c) Explain the actions to be taken should a main generator circuit breaker stay connected despite repeated efforts to trip it off the board.…

  • EK Electrical Aug 2020 (Q9)

    EK Electrical Aug 2020 (Q9)

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    UKM TUTICORIN
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    Describe the construction and operation of EACH of the following: (a) synchronous motor; (5) (b) induction motor. (5) Aug 2020 (Q9)

  • EK Electrical Jul 2020 (Q11)

    EK Electrical Jul 2020 (Q11)

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    UKM TUTICORIN
    in

    With reference to electrical system protective devices, explain the purpose of EACH of the following: (a) Overcurrent protection; (2) (b) Short circuit protection; (2) (c) No-volt protection; (2) (d) Reverse power protection; (2) (e) Preferential tripping. (2) Jul 2020 (Q11)

  • EK Electrical Jul 2020 (Q10)

    EK Electrical Jul 2020 (Q10)

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    UKM TUTICORIN
    in

    With reference to star delta starters used for three phase induction motors: (a) Explain in detail why this type of starter is employed; (4) (b) Explain, with the aid of a circuit diagram, the sequence of operation of a star delta starter. (6) AC Starters Jul 2020 (Q10)

  • EK Electrical Jul 2020 (Q9)

    EK Electrical Jul 2020 (Q9)

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    UKM TUTICORIN
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    Describe, with the aid of a block diagram, how automatic starting, load sharing and stopping of generators in response to load changes is effected. (10) Generator & circuit protection Jul 2020 (Q9)