Dear aspirant,TS ECET exam is conducted for Diploma & B.Sc.(Mathematics) holders who are seeking lateral entral admission into various B.E/B.Tech courses.

Eligibility Criteria for admission to the course is-

• Candidates should have completed Diploma in Engineering and Technology or any other equivalent degree or candidates should have passed 3-year B.Sc. Degree examination with Mathematics as one of the subjects in the group combination from a recognized University in the Telangana/Andhra Pradesh state.
• Candidates should have qualified the exam with at least 45 percent marks and the qualifying marks for reserved categories is 40 percent.
  

The cutoff for admission varies every year from college to college. Therefore it would be difficult to tell you about the cutoff or the marks required for admission.
You can go through the link below and check the previous year allotment details for reference and to have an idea about the rank required for admission

Https://tsecet.nic.in/Default.aspx

Good Luck!