You should complete 10standard,puc 2nd year and IT for eligible for Diploma Mechanical engineering. There is no entrance examination. You Can't Go to BE after completing 3year of diploma engineering.
To get into this college student need to pass KCET entrance exam. There is no cutoff.
The eligibility criterion is 10+2 pass and should have a good rank in KCET entrance exam.
Impact school of architecture is a good institute and provides quality education.