Hello

NRTI is India's first Railway University

There are no specific practice sets avaliable but you can practice by looking exams that have simillar syllabus for entrance such as DU-JAT. So you can practice for DU-JAT exams since it has simillar patters.

For more infomation you can visit this linik https://www.careers360.com/exams/nrti-admission-aptitude-test.

Hope it helps you.