Hello aspirant!!

If the question would have been for Computer Science branch then definitely NIT Warangal is a better choice than DTU, but when we talk about Mechanical, DTU is better than NIT Warangal. NIT Warangal mechanical is one of the oldest branch. Moreover, if you reside in South India then go for NIT Warangal else go for DTU without any second thought.

Hope this was helpful.

All the best.