UKM Tuticorin

Tag: #ekmanagmentwritten

  • EK Electrical Dec 2020 (Q10)

    EK Electrical Dec 2020 (Q10)

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    UKM TUTICORIN
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    With reference to braking of a.c. induction motors: (a) Explain why braking may be required; (2) (b) Explain why electrical braking is preferable to mechanical braking; (2) (c) Explain the term plugging; (2) (d) Describe how dynamic braking is achieved. (4) Dec 2020 (Q10)

  • EK Electrical Dec 2020 (Q9)

    EK Electrical Dec 2020 (Q9)

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    UKM TUTICORIN
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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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    UKM TUTICORIN
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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
    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) Oct 2020 (Q10)

  • EK Electrical Oct 2020 (Q9)

    EK Electrical Oct 2020 (Q9)

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    UKM TUTICORIN
    in

    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
    in

    (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
    in

    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
    in

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

  • EK Motor Dec 2024 (Q9)

    EK Motor Dec 2024 (Q9)

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    UKM TUTICORIN
    in

    With reference to diesel engine SOx exhaust gas cleaning and pollution control: (a) state, with reasons, which system parameters are monitored, explaining where the monitoring devices are located, how the data is stored and how data is made available to regulatory authorities; (10) (b) state how pollution of sea water can be caused by the…

  • EK Motor Dec 2024 (Q8)

    EK Motor Dec 2024 (Q8)

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    UKM TUTICORIN
    in

    (a) With reference to an engine cylinder liner explain the term “Thermal Stress”, indicating how and why it occurs during operation of an engine. (4) (b) Explain how the upper part of a cylinder liner is subjected to fatigue during engine operation. (4) (c) Explain how thermal stress and fatigue combine and can lead to…