You don’t have to stress, it is an easy assessment, make sure that you revise all the principal basic formulas of electrical engineering, and revise your dissertation or project you did at uni they gonna ask you oral questions in the one to one interview.
Your day gonna start with the presentations, try to be first to present respect the time they give.
in the group interview they gonna give you a simple exercise try to speak a lot try to take the lead.
in the face to face interview they gonna ask you technical questions and HR questions like why KBR, give an example were you had faced a difficult situation what is you preferred subject at uni, tell me one time when you had to work in a team…
at the end they ask you to write a text on why do you want to work for kbr try to prepare it at home, one full page is more than enough
if you have any more questions don’t hesitate