GATE 2013 Answer solution:
EC only
http://examhuntblog.files.wordpress.com/2013/02/gate-2013-answer-key-ec-by-examhunt-in.jpg
This link has the  anwser key only.....


For solution go on the following link...
http://www.engineersinstitute.com/gate_2013_details_solutions_ece.pdf