There were three rounds-one aptitude test rounds, one technical interview and one HR interview. The aptitude test required the students to solve questions on electronics and circuit theory. The questions were not MCQs. A sheet was provided where the students had to write down the answers. Rough sheets were provided which had to be attached with the answer script. The questions were on op-amps, signals and systems, MOSFETs and circuit theory. There were questions on A/D converters and DSP as well(hardly 2 or 3). The duration was 2 hours. 10students were shortlisted. The interview round lasted for more than 2 hours(for people who were not selected, it lasted for shorter periods of time). The questions were based on questions asked in the aptitude test albeit, more difficult and required a greater clarity in concepts about feedback, Laplace transforms, RC circuits and Fourier transform. But the interviewer was helpful and was giving hints when I got stuck and was able to solve them. The HR round was more on why I wanted this job etc.