I got the offer via Campus Placement so the first round was resume selection after that we had an online test of 1 hr if you get selected you will have your 1st personal interview in which all the questions will be related to your basic understanding of core knowledge and also some technical questions as well, the interview was 40-45 min long and after clearing the interview round next round was PPT presentation in which they will give you the topics related to your branch or topics related to recent and new technologies, the presentation needs to have a max of 4 slides with subtopics as Intro, Description and detailed info about the topic and use of that thing in futures what value does it hold in future, after completing your presentation the panel will cross question you about the topic and the round ends there. Last round you will get a call from HR and that's the end of the process. The last two rounds of ppt and HR was offline other round were online. To prepare for the interview I will highly recommend going through your electronics or mechanical basics in a very detailed manner so you should be able to answer all the questions and also have very basic programming knowledge. Hope this will help you