Electronics Engineering

USA is best location for Engineering and Management education. USA is hub of Technology invention and innovation, therefore, MS in USA will add lot of value to your technical career. If I have a choice I will always recommend MS over MBA in USA. You may evaluate doing MBA in USA after few years of experience.

As ECE engineer you can be employed in any industry as Operations & Maintenance engineer. In addition, you can work in Electronics manufacturing companies, Telecom service providers, Indian Engineering Services, Central and State Government jobs where eligibility criteria is graduation degree, Defence Services, Paramilitary forces, R& D organisations such as DRDO/ ISRO etc, IT companies, PSUs, Org such as NIC/CDAC/NISG etc, Networking engineer jobs and acedmics etc. ECE engineers can work in design of new system. It us one of the field where there are maximum opportunities for innovation.

Power System Engineering is a better option for job in comparison to Power Electronics specialisation in M.Tech EEE.

Check the article below :
https://www.shiksha.com/career-as-electronic-engineer-cc-188

Follow the link below for detailed syllabus of ECE:
http://www.wbut.ac.in/syllabus/Engineering_Syllabus_of_First_Year_EE,ECE,PWE,AEIE,EEE,IC,Apparel_2007.pdf

Check the link below for detailed syllabus of ECE:
http://www.wbut.ac.in/syllabus/Engineering_Syllabus_of_First_Year_EE,ECE,PWE,AEIE,EEE,IC,Apparel_2007.pdf

It depends on your passion and interests.
In India, there is not much scope for Biomedical Engineering. The few colleges which offer Biomedical Engineering, don't have good facilities or advanced equipment.
On the other hand, electrical engineering is an evergreen field of engineering. Jobs are plenty and is going to be in the foreseeable future.
Electronics engineering companies in India are few so most electronics engineers end up being software engineers. I don't recommend Electronics engineering to you unless you are 100% sure that you love semiconductors, diodes and transistors.

placement in this branch is very bad even from good college