Hey dear,
Acoording my information the scheme was implemented by previous governments with a cap of Rs. 2lakh in the annual income of parents in the case of SC and ST students. 
The limit was Rs. 1 lakh for BC, physically challenged, minorities and 
economically backward class students. Students who secured below 
10,000th rank in engineering stream of EAMCET were fully reimbursed fee 
while only Rs. 35,000 was paid for others.

Hope it helps!!