My AIR is 598

What courses do I have the chances of getting?

Gate score 647 for 2013
I saw cut offs on the basis of gate scores. I think the gate rank for the same score of 647 in 2012 was very high, like around 1000.

The courses I have applied to are

Design (No TA)
Thermal (No TA)
Manufacturing (TA)
Aerospace (No TA)
Manufacturing (No TA)
Nuclear Engineering (TA)
Applied Mechanics ( No TA)
Petroleum Engineering (TA)