Question regarding single phase transformers!?

Discussion in 'Homework Help' started by saaketh, Dec 2, 2012.

  1. saaketh

    Thread Starter New Member

    Sep 13, 2012
    A 2200/220V, 50Hz single phase transformer has exciting current of 0.6A and a core loss of 361W with respect to HV side. If the transformer supplies a load current of 60A at 0.8 p.f. lag at 220V, then calculate the primary current and its p.f.

    Ans: 6.487A, 0.766lag

    How do we work this out? Please help me out! I tried finding the secondary current w.r.t primary and then Ic and Im, but it didnt work out somehow.