Hello Aspirant,
There are some of the polytechnic or diploma colleges which are affiliated by AICTE, now as your University is affiliated by UGC , which is also satisfactory, however it also depends on the organization or recruitment criteria , if it mentioned that AICTE approval than it is necessary, then you may not eligible to apply.
Now coming to central government jobs, according to the the eligibility criteria for SSC JE for diploma holders, where it requires candidates must pass diploma course from a recognized institute, so since there is no mention of AICTE, you can apply for that.
I hope this information helps you.
Good Luck!!
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