The entire process took one day, 1st the written test which included aptitude, english and domain questions(electronics). And an essay round where you need to write an essay on the topic you like. Then the gd. The cumulative of gd and essay would qualify you to the technical interview round. In TI round only the basics of c and c++ were asked as I was from non-it department. Finally the HR, they will check only your communication skills.