I applied online and the process took 6 days.

There were four rounds :

1. Aptitude - It was a major elimination round. The test was for 90 minutes divided into three sections logical reasoning, apti and programming. LR part was the toughest as it was time consuming. Apti questions were easy as they mainly consisted percentage, profit loss, average, simple interest, compound interest, number problems. Question on programming required some thinking but they were not tough. We were asked to write down the output, flowchart and check the approach.
2. GD - A group of 10 students is made and then you go for gd. Topic is either decided by the recruiter or by the students itself.
3. Technical interview - They will go through each and everything that you have mentioned in your resume. So don't mention anything which you are not confident about.
4. HR interview.

The most surprising part was that I was even asked questions about the basic electronics in the interview round as my branch was ECE.