For a non-ideal single-phase transformer, which of the following is true?
1
The power factor observed on the primary side leads and on the secondary side lags for any load connected to the transformer’s secondary side
2
The power factor observed on the primary side and secondary side of the transformer are always same
3
The power factor observed on the primary side lags and on the secondary side lags for any load connected to the transformer’s secondary side
4
The power factor observed on the primary side and the secondary side of the transformer depends on the load connected to the transformer