Hii guys Ace academy is a number one institue for graduate aptitude test for enginners coaching and also good for IES (Indian engineering services). If any one want to crack gate examination my suggestion is go to aec academy. In Hyderabad it has a number of branches like areas dilshuknagar, kukatpally, abids for mechanical enginners dilshuknagar is good and remember one thing guys hard work is very important to crack gate exam. And my suggestion is take long term coaching of 6 months .its really helpful to you.. All the best..