Hello Devendra,

Each Specialization has its own Advantage, M.tech Electrical specialization you can prefer-

   Power Electronics & Drives

   Power Systems Engineering

   Instrumentation & Control Systems

   Computer Controlled Industrial Power

   Industrial Electronics etc.

Top 3 specialization are mostly taken by Electrical Engineering Candidates. The placemnet varies to NITs so if you mention here about which NIT you wish to know, I can help you accordingly.

Good Luck!