Diploma

It is available here at Andhra and may in Telangana. You have to attend an exam and there by you can directly enter into 2nd year Polytechnic. Keep asking.

Dear,
There are many private colleges available for study. But my suggestion is to go with government colleges which would enhance ones skill.

Dear Deepansu,
It's ones own interest and comfort choosing the branch.
Mechanical engineering is the core branch and In my opinion polytechnic deals with self learning personally and professionally.
You can go through their official website of the college also.
keep asking.
Remember one thing you should

Hello AdmitGermany, USA, Canada, Australia, Singapore, Japan, Hong Kong are some of the great locations you can check for your higher studies.

Hello Sanjay,
Every course and college have different entry requirements, you have to check on their websites for specific information. Normally you must have around 60% to secure a place at a decent college. You must also take the IELTS and have atleast 6 with module score less than 5.5.

Hello,
This is a private college so, you can take admission directly in 2nd year. But, I don't know about the required eligibility criteria. So, you need to directly contact to college.