online aptitude test followed by personal interviews.
aptitude test was based on GRE pattern

1.puzzles were asked.
2.as my branch is electrical so questions were asked from electrical domain like which motor is used in electric trains etc
3.some basic programming questions were asked like program for swapping etc.

i was quite confident during the whole interview. i was comfortable with most of the questions asked.

1.tell me about yourself.
2.questions were asked about my academic background.
3.hobbies and interests

Well all i should say is be confident,try to divert the interviewer towards your strengths..

700 applied and 200 got through.rank was not specified.
in one word CONFIDENCE