Hello Teja,

Graduate Aptitude Test in Engineering (GATE) is a national-level post-graduate entrance exam that is jointly conducted by the seven IITs (Bombay, Delhi, Kanpur, Guwahati, Kharagpur, Madras and Roorkee) and the Indian Institute of Science (IISc), Bangalore for admission to M.Tech programmes offered by government as well as many private institutes.

GATE 2019 was organized by Indian Institute of Technology (IIT) Madras in online mode on February 2, 3, 9 and 10, 2019.

AP PGECET is conducted by the Andhra University for admissions to various postgraduate courses offered by it. The application procedure has commenced and candidates can apply till 30th March without late fee. The exam will be conducted in online mode from May 2 to 4. The candidates must have appeared for GATE/GPAT/AP PGECET exams and should have secured minimum 50 % for general and 40% for SC/ST in B.Tech/B.E degree. The lower age limit is 21 years.

During admissions, the first preferrence will be given to GATE/GPAT qualified candidates. 

As for your question, you have to fill the application form of AP PGECET and choose the exam as GATE. 

For more information, follow the below links:

Https://engineering.careers360.com/articles/ap-pgecet