Applied Materials System Engineer interview questions

They contacted me first through a phone, asked me about my expectation of the salary what my recent project were about. The first interview was to talk about myself and what I've done in my studies. The second interview was about preparing a presentation about the machine I was supposed to work on. It was pretty difficult because the machine is not easy to understand. Took them about two weeks to let me know I didn't pass the interview (via a phone call).