I have done my Masters from IIT Madras in Electrical Engineering with CGPA 7.3. I intend to take up Masters on another stream mostly on Microelectronics from reputed US University. Am I eligible to do that ,since I have already earned a Masters degree in India? So do I need to take up my GRE and TOEFL? In calculating GPA, do US Universities take into account my marks at PG Level or UG level or both?