Hi uday,

Ecet exam is to get seat in the engineering to qualify  in the ecet exam we should get 25% of marks means minimum of 50 marks in the ecet exam based  on previous year cutoff u may get seat in the jntu for 120 marks but if competition may be more u may not get seat in the jntu and for your bc d caste category u may have some benefit based on your category  u may get  seat in jntu for the mechanical branch  for your category to check  your rank apply the following formula and u may get ur nearly rank

Percentile calculation- {(Maximum rank – Rank of the Candidate)* 100} / Maximum Rank.

By the estimation of rank u may know that u will get seat in the jntu for the mechanical branch in the engineering.

For below 1000 rank u would get complete reiabasment from the government or u will get 35000/-reimbasment and based on previous years cutoff you may get seat in mechanical branch i think my suggestions and knowledge would be useful to u.ALL THE BEST for your future