Hello Sourabh.

Well it is a bit tough question if u are asking on the basis of a good job as both these fields are having a cast no of applications and great job base.

Since u r from mechanical so u are having a brief knowledge about both these fields too and also about ur inclination towards different subjects in ur btech course.

So totally depends upon ur interest and skill which stream u should be opting as both of these two are well established and are having a huge network of jobs in the career sector.

Hope u got my point. Aks if u are having any query.

Good luck for ur bright future.