For non-engineers the examination would be just 1 type of exam and for cadet engineers there would be two examinations. First is the basic logic and English comprehension and the second part are more of a business type exam. No need for too formal attire. Applicants are wearing polo shirts and polo. Once finished they would ask you about your background in the academic side and then they would ask about where does your parents and siblings work. A little bit chat about previous projects and research and developed skills.