Germany

You need to appear only in GRE and IELTS for the same.

Like German applicants, foreign students applying for admission to study at TUM must also have a higher education entrance qualification. If the school-leaving degree is not comparable to the German university entrance qualification, direct admission can only be granted after attending Studienkollegs (preparatory studies) and after having taken the university qualification assessment examination. Further information is available in the DAAD (German Academic Exchange Service) brochure "Studying in Germany”.

It is difficult to get job directly based on Indian University degrees and experience in Germany unless you have super specialist skills because of visa restrictions and challenges. Higher studies in Germany ease out visa challenges for a job in Germany. Precise advice can be shared only based on exact details of your education and experience.

MS will be the best option.

Go for USA, that's better.

You don't need to worry about 3 GPA. It is for EEU or American students. For Indians, we have to qualify IELTS and GRE exam as per the demand of the college.

Both the areas are good and have an immense scope. Material Science which is an interdisciplinary degree is offered only by a few top universities as Master's degree. Materials engineering graduates have jobs in materials-based industries such as vehicle construction and mechanical engineering, chemical industry, information and communication technologies, energy supply, electrical engineering/electronics and metal production and processing. Germany is known for mechanics and automobiles and this industry is the country's driving force. Check the Make it in Germany website for more career information.

Hello Harikrushn,
Here is the list of best Universities in Germany for Masters in Instrumentation and Control Engineering:
1) Technical University of Munich
2) Technische Universitt Berlin (TU Berlin)
3) KIT, Karlsruhe Institute of Technology
4) RWTH Aachen University
5) Technische Universitt Darmstadt
6) Universitt Stuttgart
7) Technische Universitt Dresden
8) Friedrich-Alexander-Universitt Erlangen-Nrnberg
9) Albert-Ludwigs-Universitaet Freiburg
10) TU Dortmund University
All the best.