Engineering Admission Process

Most of the universities conduct entrance examination for candidates seeking admission in engineering degrees. All students who have completed in 12th board or in final year of 10+2 stage with Physics, Chemistry and Maths as a subject are eligible to appear for entrance examination.
You may refer to following link for list of engineering entrance examination and their process https://www.shiksha.com/b-tech/exams-pc-10
IITs are the most prestigious engineering and technology institutes in India. In order to seek admission in IIT, you are advised to appear for Joint Entrance Examination (JEE). JEE is an all India common engineering entrance examination of objective pattern which is conducted for admission in various engineering colleges and courses all over the country. It is regarded internationally as one of the most challenging engineering admission tests. JEE consists of two parts, JEE Main and JEE Advanced. JEE-Advanced is for admission to IITs, while the JEE-Main exam is for admission to NITs, IIITs, Centrally Funded Technical Institutes (CFTIs). Only the students selected in JEE Mains are eligible for appearing in JEE Advanced.

Aspirants who have diploma in Engineering and desire to do B.Tech in Mechanical are given an option to join directly to the second year of B.Tech or BE program. This opportunity available in the engineering colleges affiliated to Mumbai University. As to get admissions, candidates have to appear and qualify in the State Level Entrance Exam. The admissions shall be done according to the rules and condition of the University of Mumbai.
Eligibility for B.Tech Mechanical Lateral Entry in Mumbai University
Candidates who have secured 60 percent or more in Diploma in engineering from the State Board of Technical Education or any other acknowledged institution are considered eligible to apply for the B.Tech program under the lateral entry scheme. In addition to this, a concession is available for students who belong to the economically backward categories whose family income does not cross Rs.4.5 lakh per annum. These candidates could do with 55 percent marks in their final exams. For students of the backward community, a pass in diploma will suffice. Those candidates who are going to appear for the final year exams are also qualified to submit an application for State Level Entrance Exam.