If you have completed +2 in any board then better to appear in entrance examination and try to score good ranks so that you can take admission in good colleges.
Check this reference website where you will get engineering entrance sample papers and free practice tests.
If you are want to study b.tech after I.T.I electrician,you have to cross long way.
Like after completed 2 years ITI in electrician, you have to complete 2 years diploma ( 3 years course but you will take admission directly 2nd year)course then after you can reach to 4 years b.tech course.All are take admission by entrance examination after ITI course.So choose what are you wants to do.
Best of Luck.
Courses After Iti
IF u had done G.T.I then after clearing entrance u’ll get directly admission in b tech 2nd year.
but after i.t.i there is no benefit of its, you have 2 take admission in b.tech 1st yr.
ITI Draftsman Civil Engineering is the Best. My Lots of friends are working in Gulf Countries with Salary of 1 to 3 Laks per month.
You have to do diploma first. you get admission in diploma 2nd year. when you complete your diploma you get admission in 2nd year B-tech. and you have very good knowledge of electrical field as you will be more practical.It takes 5 years and you get good knowledge.
You can also do 12th class but you have to do 11th first as 11th is the base class of 12th. you must have to clear everything in 11th for 12th. after that you can get admission in B-tech 1st year. so it takes 6 years and long process and less knowledge.
You can get good job after diploma and dgree.