SAT is one of the exams that is used for admission to UG programs in many countries. Along with SAT, you would also be required to send your English Language Proficiency Score  to the universities. Please go through the links below to know more about the exams. You can check all the detail about SAT with the given below link.

https://studyabroad.careers360.com/articles/sat

You can also check the best countries for UG Engineering programme with the given below link.

https://studyabroad.careers360.com/articles/best-countries-for-ug-engineering-abroad

After the exams, you would be required to fill the in the application forms of the universities which would then shortlist you or offer you a seat based on your scores.

Good Luck!