Hello Suvam,

Mechanical or Tool and DIE learning courses are the best courses for the diploma. Because people with the knowledge of machines or machine designing are always high in demands . We are living in the era of technology which works on the making of advanced in machines so this is the evergreen branch. It would never go down.  Or if you are interested in CIRCUITS then you can go for Electrical too. Both the branches are good . But at last nothing is better than Mechanical. 

But at last everything depends on your interest.

hope this helps.

Hello student, 

suggestions for you would be to opt for Mechanical branch as it is the evergreen branch where you would be definitely placed. Without considering the packages offered, mechanical is the best branch and also for highly skilled people the companies offer good packages, all you need is to get experience. 

Cheers!