I applied in-person. The process took 2 days. I interviewed at Sigma Microsystems (Hyderābād) in Aug 2015
Interview
There are two rounds of interviews one is HR round and the other is Technical round. For the first day they conducted HR round cum Technical round and shortlisted the candidates based on their performance after 3 days I got the call for the technical round, in this round they asked most of the questions from my graduation core subjects.
Interview questions [1]
Question 1
They mostly try to know how in depth you try to learn, regarding the topics you have learnt previously.