Tag: #excitationsystem

  • EK Electrical Oct 2020 (Q9)

    EK Electrical Oct 2020 (Q9)

    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 (Q10)

    EK Electrical Aug 2020 (Q10)

    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 Dec 2019 (Q9)

    EK Electrical Dec 2019 (Q9)

    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)