My overall aggregate in engineering is 58.06%, so am I allowed to write M.Tech entrance exam?

Candidates cannot raise objection against the answer key VITMEE, as the officials do not release any answer key or question paper. 

No, there is no option of rechecking or revaluation once VITMEE results are out. 

VITMEE is the entrance exam conducted for M.Tech programme admission and VITEEE is conducted for admission to BTech programmes. However, the selection and counselling process remains to be the same.

Vellore Institute of Technology conducts VITMEE for M.Tech admissions at Vellore, Chennai, AP, and Bhopal campuses.

For M.Tech CSE at VIT Vellore campus, the safe rank is usually between 500 -700 under category 1. For CSE specialisations, the safe rank is upto 5000 under category 1.