I applied through university. I interviewed at FTI Consulting (Pittsburgh, PA) in Mar 2016
Interview
First they brought about 10 of us into a conference room to give us a run-down of what the company does, what its main product is, and the type of stuff we might be working on. We then took a break to eat lunch with some of the employees and got to know them. Afterwards everyone being interviewed was assigned 2 employees who did the actual "interview" part. Questions were largely behavioral with a couple minor technical questions thrown in. The entire process was pretty easy and laid back.
Interview questions [1]
Question 1
What kind of workplace environment/atmosphere best works for you?
For the AC
1) group round - did a case study and each of us were asked questions based on our group answer after
2) math and verbal reasoning test, written essay test
3) individual interviews - one with current analysts about cv, one with a partner (casing)
Pretty basic behavioral questions - no technicals. I'd recommend knowing your "why" and being able to clearly explain your interest in the specific practice. Also, prepare to ask the interviewer more in-depth questions, too.
Online assessment including verbal and numerical parts for the financial and economic consulting intern position. Given one minute for each question, I insist the time was quite tight for verbal part