Is it possible to change examination center for GATE examination before examination ?

Yes it is possible to change your examination center for GATE examination here I am giving you process to change exam center for GATE exam..

Firstly you have to login at GOAPS website.
Now you have to fill their choice of examination city name.
After that you have to take printout of the request form.

They should have to obtain a DD of Rs 400/- drawn in favor of "Chairperson, GATE 2014", should be payable at the city of respective Zonal GATE office.

GATE 2014 Exam Cities
. IISc Bangalore:
Alappuzha, Aluva, Ananthapur, Attingal, Belgaum, Bagalkot, Bangalore, Bidar, Chengannur, Chitradurga, Davengere, Gulbarga, Hassan, Hubli, Idukki, Kannur, Kanjirapally, Karwar, Kasaragod, Kolar, Kollam, Kothamangalam, Kottayam, Kozhikode, Kurnool, Malappuram, Mangalore, Manipal, Muvattupuzha, Mysore, Nedumangad, Pala, Palakkad, Payyannur, Punalur, Raichur, Shimoga, Thrissur , Tumkur and Vadakara
Tentative List of Examination Cities for 3rd Choice: Bangalore, Coimbatore, Ernakulam, Hyderabad, Mangalore, Thiruvananthapuram.

IIT Bombay::
Ahmedabad, Ahmednagar, Amravati, Anand, Aurangabad, Gandhinagar, Goa, Hyderabad, Jalgaon, Kolhapur, Lonavala, Mahabubnagar, Mehsana, Mumbai, Nagpur, Nanded, Nashik, Navi Mumbai, Pune, Rajkot, Sangli, Satara, Secunderabad, Solapur, Surat, Thane and Vadodara.
Tentative List of Examination Cities for 3rd Choice: Ahmedabad, Hyderabad, Mumbai, Nagpur.

IIT Delhi:
Ajmer, Alwar, Bikaner, Delhi, Faridabad, Gurgaon, Indore, Jammu, Jaipur, Jodhpur, Karnal, Kota, Mathura, Rohtak-Hisar, Shimla, Sikar, Udaipur and Ujjain
Tentative List of Examination Cities for 3rd Choice: Delhi/NCR, Faridabad, Indore, Jaipur

IIT Guwahati:
Agartala, Asansol, Dhanbad, Durgapur, Gangtok, Guwahati, Imphal, Jorhat, Kalyani, Patna, Shillong, Silchar, Siliguri and Tezpur.
Tentative List of Examination Cities for 3rd Choice: Delhi/NCR, Kolkata

IIT Kanpur:
Agra, Aligarh, Allahabad, Bareilly, Bhopal, Gorakhpur, Gwalior, Jabalpur, Jhansi, Kanpur, Lucknow, Saugar (Sagar, MP), Sultanpur and Varanasi
GATE 2014Tentative List of Examination Cities for 3rd Choice: Allahabad, Bhopal, Delhi/NCR, Kanpur, Lucknow

IIT Kharagpur:

Balasore, Berhampur (Orissa), Bhilai, Bhimavaram, Bhubaneswar, Bilaspur (CG), Cuttack, Eluru, Jamshedpur, Kakinada (AP), Kharagpur, Kolkata, Raipur, Rajahmundry, Ranchi, Rourkela, Sambalpur, Srikakulam-Vizianagaram, Tadepalligudem, Vijayawada and Visakhapatnam.
GATE 2014 Tentative List of Examination Cities for 3rd Choice: Bhubaneswar, Kolkata, Vijayawada, Visakhapatnam.

IIT Madras:
Angamaly, Bapatla, Chennai North, Chennai South, Chittoor, Coimbatore, Cuddalore, Dindigul, Ernakulam, Erode, Gudur, Guntur, Kadapa, Kanyakumari, Karimnagar, Karur, Khammam, Madurai, Nagercoil, Nalgonda, Namakkal, Nellore, Ongole, Puducherry (Pondicherry), Salem, Thanjavur, Thiruvananthapuram, Tiruchirapalli, Tirunelveli, Tirupati, Tuticorin, Vellore, Virudhunagar and Warangal
GATE 2014 Tentative List of Examination Cities for 3rd Choice: Chennai, Coimbatore, Ernakulam, Thiruvananthapuram.

IIT Roorkee:
Ambala, Amritsar, Bathinda, Chandigarh-Mohali-Rupnagar, Dehradun, Ghaziabad, Haldwani-Bhimtal, Hamirpur (HP)-Una, Jalandhar-Phagwara, Kurukshetra, Ludhiana-Moga, Mandi-Bilaspur(HP), Meerut, Moradabad, Noida, Panchkula, Panipat, Pathankot, Patiala-Sangrur, Roorkee-Muzaffarnagar, Saharanpur, Sirmaur, Solan, Sonepat and Yamunanagar.
Tentative List of Examination Cities for 3rd Choice: Chandigarh-Mohali-Rupnagar, Dehradun, Meerut, Jalandhar-Phagwara