screencasts:
AC7.1 Three-phase balanced wye load, total power
AC7.5 Tree-phase wye-wye circuit, line voltage vs. phase voltage
AC7.8 Three-phase wye connected generator, mixed load
AC7.1 Three-phase balanced wye load, total power
AC7.5 Tree-phase wye-wye circuit, line voltage vs. phase voltage
AC7.8 Three-phase wye connected generator, mixed load