I am about to take an exam for a technical position.
and "three phase analog equations" is one of the topic to be on exam and they say many fail the exam just because of this topic. So i am not really sure what to look for
They will probably have you solve an impedance problem for each phase and then have you plot the currents.
Be able to solve complex impedance and vector-ally plot same.
If this is confusing....you have much to study.