What should I do if my final year project supervisor does not answer my questions Currently I am working on my Final Year Project. I have worked with the current supervisor for 4 months. In the first month, everything went smooth. Whenever I email a question to her, she will answer it within 3 days. However, as times goes by, she started to ignore my question. This happens from 2nd month onwards till now. I don't know whether she hates my for asking so many questions or simply don't have time. 

What should I do to deal with this kind of situation as my Final Year Project's grade depends on her. If I don't have a good relationship with her, I think my grade will suffer.
Email is a terrible way to supervise work for both parties involved.  It's difficult to ask a good question over email and it's difficult to address a misconception over email.  From your question, there's no way of knowing which of several types of problems you are experiencing with your advisor.  The answer to all of them, however, is to have regularly scheduled meetings that are face-to-face if possible, or over a video link if you are doing distance learning.