Diploma

Hello Ajeesh,
It's good, that you are clear with what you have to do. You can also think of operation and logistics management. It will widen up your area.

Of course Germany, because Engineering is one of the hit courses in Germany. High quality of education with low education costs are one of the biggest lures for students to go to Germany.

Dear Chetan,
Yes, of course after diploma engineering you can do b.tech in any branch. for that you will have to appear in any engineering entrance exam conducted by each state university.

In order pursue undergraduate degree from universities in USA, you need to take TOEFL or IELTS only.
Regarding preparation of these tests, I would suggest you to join some good coaching institute in your city which offers quality coaching for SAT and TOEFL or IELTS.
These institute offers regular and weekend classes, plus they conduct mock test on regular basis.
For your reference find below some of the finest coaching institutes which offers quality coaching for SAT and TOEFL or IELTS.
- The princeton review.
- TIME.
- IMS.
I hope this could help you and of course all the best for your future.

Yes, you can migrate, but you need to have a specific reason for migration and need to get an approval from the Diploma Examination Board.

The candidate who passed 10+2 or equivalent examination of any other approved board or university in science.
There is no minimum percentage of marks required for this course.