hi jagadeesh
1. It takes anything from 3-4 years and above to complete a phd
2. yes there are; look around online and apply. You'll need to fill up the application forms, minimum 2 letters of recommendations, certified copies of your transcripts/degrees and you'll need an English cert (example TOEFL or IELTS). You'll either have to write a research proposal or personal statement (depending on your application).
3. It is possible to get jobs, it just depends on what job, I guess.
good luck
love satchi