KMAT

Select some colleges or universities like SRM, VIT, AMITY, Loyola
Then place an online application
And then write their entrance exams and attempt their Interview
Once selected, choose the best universities and shortlist them to 1
Get the admission in the best suited college or university
Hope this ansewrs your question and All the Best.

Hello Sir,
Yes, you are eligible for getting a seat in CUSAT, but the department which you want to choose may not be available for you. So, it depends on your branch or department which you will choose.

KMAT exam will be First week of August 2019 and KCET will be in April. For exam details visit: https://www.shiksha.com/mba/kmat-exam-dates and https://www.shiksha.com/b-tech/kcet-exam.

As per the eligibility criteria for KMAT 2019, the entry requirements into professional courses like MBA/PGDM in Karnataka are followed as per the UGC guidelines. Educational qualifications:-
For MBA/PGDM :- Bachelor's degree with minimum 3 years duration of any recognised education body in Commerce, Management, Arts, Social Sciences, Engineering/ Technology or equivalent, and have secured at least 50% of marks in the aggregate (45% for SC/ST candidate). Candidates in their final year of Bachelor's degree are also eligible. So you are eligible for KMAT-2019.

Yes, you can apply for MBA in CUSAT with your KMAT score as well.

You can refer the link mentioned to get detailed information regarding the exam: https://www.shiksha.com/university/university-of-kerala/kmat-kerala-exam.

Yes, you have to submit both the score cards.

Regarding the admission,
Yes, you have a chance to get an admission because if you have a valid score you are eligible to apply in Rajagiri. Of course students who have scored more marks than you will have higher preference but still you will be able to apply. About the fees, the 2 year tuition fees for MBA will be about 5 lakhs excluding hostel fees. For PGDM, it will be about 650000. Just a tip, when you are shortlisted for the GD PI session, make sure you do well as your kmat scores will only get till the GD PI session. The rest depends on your performance in GD and PI.
All the best.