They offered 20 PhD positions and we could select just one. I submitted my documents (CV, cover letter, diplomas) and they called me for an interview. The interview was just 15 minutes and and 2 professors and committee members attended in that. They asked general and specialized questions about the area.

Applied online with all the required documents, accepted for an interview. The skype interview was for 20 mins. Fist they ask you about your background and then why PhD and why this institute? Then questions based in your topic