Mechanical Engineering

Yes, you can do M.Tech in Biomedical Engineering. The eligibility criteria of IIT Mumbai is given below:
1. Eligibility criteria (Qualifying Disciplines) : B.E. /B.Tech. /AMIE or equivalent in Biomedical Engineering (BM), Biotechnology (BT), Chemical Engineering (CH), Computer Science and Engineering/ Information Technology CS Electrical Engineering (EE), Electronics/Telecommunications Engineering (EC), Engineering Physics (EP), Instrumentation Engineering (IN), Mechanical Engineering (ME), Metallurgy & Materials Science (MT), Pharmaceutical Technology (PY), Other Engineering (ZE).
2. You have to give Bio-medical Engineering GATE paper with code no. BM for admission in M.Tech courses.

The Air Port Authority of India is the organisation, Who invites applications from eligible candidates for Air Traffic Control. The eligibility criteria of Jr. Executive (Air Traffic Control) is B.Sc. With Physics and Mathematics or Regular full time B.E/B.Tech in any discipline with minimum 60% of marks. Age : 18-27 Years
Selection process for AAI Air Traffic Control : Online examination and voice test followed by document verification. The position of an Air Traffic Controller is an important part of the Aviation industry. Air Traffic Controllers are trained to continue the safety, orderly flow of air traffic in the air traffic control system globally. Its a specialised field that requires the knowledge of technical and handling of equipment. Air Traffic Controller is responsible for the safety of the Aeroplane both in the skies and on the ground at airports. The life of an Air Traffic Controller job is quite stressful. Since they have to take care of the air traffic, giving instructions to the pilots, etc. , it involves long working hours wearing earphones and giving instructions to the pilots for landing and takeoff from the airport. The profession involves quick and timely decisions on a daily basis. They have to be able to quickly recall the registration numbers of the aircraft under their control, the type of aircraft and its speed, the position of the aircraft in the air and also the location of navigational aids in that area. The profession of an Air Traffic Controller is considered as one of the most mentally challenging careers. So from above you have to first complete your degree than can apply for the asked post.