Opto Circuits interview questions

Online test followed by technical interview followed by manager interview and HR round. The online test was apti + tech and was a little difficult. I was quizzed on all my subjects in my 1hr + tech interview. In the manager interview the main objective i believe was to what i really want to do . They wanted technical answer to that and not "generic" ones. The interview went for about 30 mins. i was quizzed on internships and projects too. The HR interview was just 5 mins and had standard questions.

Employee referral, interview was 3 rounds 2 from management and one from HR, The interview took place on the same day and the offer was given same day. Basic question about the education, skills , etc.