Submitted Questions

  • Mar 08 2010
    07:28 PM
    3069
    3

    AC line Power Loss
    • jabbaa

    High voltage is traded off for lower current in an AC line transmission. High current would require thicker cables, hence losses. How much can the voltage be increased to have a lower power loss? What is the ratio b/w current and voltage (p = I^2 * R).

    Jayrod

    • Jun 21st, 2010

    "High current would require thicker cables, hence losses." - I disagree. The larger the cross-sectional area of a cable, the lesser the resistance (remember the formula for resistivity). Thi...

  • Mar 08 2010
    07:20 PM
    3679
    0

    Power Lines
    • jabbaa

    In an AC transmission line(3 phase), If there is a short between any two phases. How will you determine this fault on a protection relay. what will your wave forms look like?