Hello Ankita,

If you apply for Suri Polytechnic college or any polytechnic college, they have a defined fees 

 total fees are been calculated based on the Diploma course

And for the further details, if you have any query you can even visit our website, where there is a detailed description which would be quite helpful for you

https://www.careers360.com/colleges/hsb-polytechnic-suri/diploma-in-mechanical-engineering-course