this is ravi from bidar (karanataka).i completed diploma in electronics branch,and preaparing for aieee to get engg.seat in nit. and i want ti conform that can i take any branch in nit's or how? i am confused please reply me and is in nit's also three years course?

I assume u did u r diploma for 3 years after 10th grade.

As in the case of state C_{ETS from Andhra, may be karnataka , u can exempt the first year of engineering, but its not the case with AIEE conducted by CBSE board. here again U have} to go through AIEEE and  have to do 4year engg course

best of luck with u prep.

regards

Ramesh