Hello aspirant,

If you want to get admission in B.tech courses you should apply for B.Tech lateral entry as you are a diploma holder in ECE.

You will get admission to the second year of any B.Tech course through B.Tech lateral entry exam.

No national entrance test is conducted in the country for B.Tech lateral entry in government colleges, private colleges, universities, etc.

The B.Tech lateral entry admission to various colleges is done on the basis of various state level lateral entry exams like AP ECET, TS ECET, UPSEE lateral entry, JELET, etc.

To get more information about lateral entry, you can visit the link given below,

https://www.google.com/amp/s/engineering.careers360.com/articles/b-tech-lateral-entry-in-government-college/amp

Hope it helps you..

Best of luck..