First round: Two tests viz., an aptitude test (speed test) with negative marking for 30 minutes and a visualization test (no negative marking) for 45 minutes Second round: If you clear the first round, then there is a technical interview Third round: If you clear the second one, then there is an HR interview The aptitude test is quite easy, 20 questions to solve in 30 minutes. Note that as there's negative marking, just attempt the questions that you can solve correct. Refer the RS Agarwal quantitative aptitude book. For the visualization test, problems on ortho-iso projections/views and geometric missing views (7 questions). Attempt all the questions as there's no negative marking. Free hand sketches are acceptable, but I suggest to first attempt the questions that you can solve properly using scale and then go for free hand in case of time exhaustion. Refer the ND Bhatt Engineering Drawing book.