Mechanical Engineering

Sijo, you can go for a higher degree. Your diploma can let you take admission in 2nd yr.of B.Tech. Choose a branch of your choice and take admission in it. These days, in place of traditional ME, you can go for Mechatronics, Aerospace, Automobile, Aeronautical, Astronautical etc.
For admission, you have to appear for Lateral Entry Engineering Test (LEET). You must have min.of 60% marks in diploma to appear for LEET.
If you have not given LEET too, then opt for good private universities like LPU, MIT, IIIT, DBU, etc. They offer world class environment to students along with good placements. Some even offer good scholarships to students.

JIIT noida does not offer mechanical .
JSS and JIIT both are good but difference is in crowd. In JIIT you will find some of the riches, but in JSS most of student are from different parts of UP.

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Yes, Canada has many good colleges teaching Mechanical Engineering. Whether you choose to do MSc, MEng or MS, the list of colleges specialzing in this field is as below.
University of Alberta,
University of Victoria,
University of Manitoba,
Memorial University of Newfoundland,
University of Ontario Institute of Technology,
University of Saskatchewan,
University of Ottawa,
University of Windsor,
University of Calgary,
McGill University,
University of British Columbia.

Yes, co-curricular activities always help. Try volunteering at some NGO as well to show social work on your CV. And improving CGPA is very important, so focus in that as well. You will also be required to appear for IELTS, so aim at scoring at least 7 bands overall so that your admission process is smooth.

Yes definitely, you can go in space technology line as a lot of concepts which are applied in space engineering are at their very base mechanical in nature and as the basic concepts of Mechanical engineering like solid mechanics, fluid mechanics, heat and mass transfer are taught in mechanical engineering course in B.Tech level so you could easily get into advance topics of space engineering. Moreover ISRO takes mechanical engineering graduates every year so there is immense scope for Mechanical engineers in space engineering.

Hi,
Kindly follow the link below :
https://www.shiksha.com/top-mechanical-engineering-colleges-in-pune-rankingpage-48-0-0-174-0

Hi Vivek,Kindly, clarify and elaborate your query.

Hi,
Amity is a reasonable good choice for B.Tech mechanical engineering. It has extremely good infrastructure and facilities. Learning will depend more on you and your attitude and motivation to remain focused on study.