Yes, you can study M.Tech in different branch compared to B.Tech. for admission in the other branch you need to have good cutoff marks for the same branch in the entrance examination.

As per your request here I am telling you the names of specializations in EEE branch:

Power systems
Electrical drives
Robotics
Generation systems
Electronic designing
Microelectronics

Top M tech Colleges in India are as follows


IIT Bombay, India
IIT Kanpur, , India
IIT Delhi, India
BITS, Pilani University, India
IIT Kharagpur, , India
IIT Madras, India
IIT Varanasi(ex-IT BHU), , India
IIIT Allahabad, India
IIT Guwahati, India
ISM Dhanbad, India
College of Eng., Anna University, Guindy, India
NIT- National Institute of Technology, Waranga, India
New IITs, India
BIT, Mesra, Ranchi, India
NIT- National Institute of Technology, Trichy, India
Delhi College of Engineering, New Delhi, India
Punjab Engineering College, Chandigarh, India
NIT- National Institute of Technology, Suratkal, India
Motilal Nehru National Inst. of Technology, Allahabad, India
IIIT, Hyderbad, India
Bengal Eng. and Science University, Shibpur, Howrah, India
MANIT, Bhopal, India
PSG College of Technology, Coimbatore, India
Thapar Inst of Engineering & Technology, Patiala, India
Harcourt Butler Technological Institute, Kanpur, India
Malviya National Institute of Technology, Jaipur, India
VNIT, Nagpur, India
NIT- National Institute of Technology, Kozhikode, India
Dhirubhai Ambani IICT, Gandhinagar, India
Osmania Univ. College of Engineering, Hyderabad, India
College of Engineering, Andhra University, Vishakhapatnam, India
Netaji Subhas Institute of Technology, New Delhi, India
NIT- National Institute of Technology, Kurukshetra, India
NIT- National Institute of Technology, Rourkela, India
SVNIT, Surat, India
Govt. College of Engineering, Pune, India
NIT- National Institute of Technology, Jalandhar, India
JNTU, Hyderabad, India
R.V. College of Engineering, Bangalore, India
NIT- National Institute of Technology, Jamshedpur, India
University Visvesvaraya College of Eng., Bangalore, India
VJTI, Mumbai, India
Vellore Institute of Technology, Vellore, India
Coimbatore Institute of Technology, Coimbatore, India
SSN College of Engineering, Chennai, India
IIT Roorkee, India
College of Engineering, Trivandrum, India
NIT Durgapur, Durgapur, India
SIT, kolkata, India
Mumbai University Inst. of Chemical Tech,India