I am running in to a problem when working on 3 phase problems. I don't really know how to determine if the voltage given in the question statement is the line or phase voltage.
The magnitude of the phase voltage of an ideal balanced three-phase Y-connected source is 4000V. The source is connected to a balanced Y connected load through a distribution line that has an impedance of 1+j8 per line. The load impedance is 119+j27 per phase. Using the source voltage Van as the reference, find the following phasor quantities.
For me when I see the Van as reference I think that the 4000V is the phase voltage and the line voltage will be sqrt(3)*4000.
Am I right in this assumption?