Dear Aspirants ,

Im sorry to say that no you cant take admission in Diploma after completion of Btech .But im sorry to interrupt ,but it will have  trouble is your carrier after doing like this and it is also worthless .Because after completion of 4 years in undergraduate course or Higher version of diploma and  you try back again in lower version of Diploma course , so it is worthless and for my suggest dont do that.

I hope it will helpful

Thanks