Please mention the name of the exam. That is very important details that we need to know.
Polytechnic college exam depends on there states also. Like in west bengal the diploma exam known as jexpo , in odisha is DET like that you have to mention in which states you get admission , please mention the name of exam
I provide you name of colleges , you can visit here to see the cutoff fees etc

https://engineering.careers360.com/colleges/list-of-diploma-in-aeronautical-engineering-colleges-in-india

Thank you. All the best. I hope this answer helps you.

JNEC Aurangabad

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