Can students join Nagaland University directly without any entrance exam?

The Nagaland University placement data below shows the placement statistics for the academic year 2022-23. The Nagaland University average package offered to the students is about Rs. 3 LPA for UG students, and for PG students, the median package is Rs. 4.00 LPA

Selection criteria for MBA at Nagaland University are as follows:

• National Entrance Exams: CAT, MAT, CMAT, XAT, ATMA (strong scores, above 70th percentile recommended).
• NU-MAT: University's own entrance exam (similar standard to national tests).

Both require:

• Personal interview/group discussion.
• Selection based on: Entrance score, interview/discussion, academics

Yes for taking admission in MBA programme in nagaland univeristy you need to appear in MAT Exam.It is standarized test that has been adminstered since 1998 to help business school candidates to MBA and releated program.

eligiblity:Bachelor’s Degree in any discipline with minimum of 50 % ( 45% for ST and SC)

Exception:
Candidates who have appeared for CAT/MAT/CMAT/XAT/ATMA and having valid score can
directly apply for GD and PI

I do not think so that education fee of Nagaland university is too high. It has nominal fees like any other college. The average fees of Nagaland university is around INR 22500 per year. The admission fee for BA, B.Com, BBA, and BCA programs is INR 5,000, which must be paid immediately after the admission decision is announced. The LLM fee is around INR 37,000. 

You can check the cutoff on the university official website. I do not have any idea about your stream so lets take example like for MBBS. You need good score in NEET exam like if you belong to general category your marks should be around 618 and for obc category marks should be around 612  and for sc and st category, your marks should be around 514 marks and 469 marks.