Hi dotdottung,
Sorry, I'm not very clear about what type of scholarship it is. I got a PhD scholarship (mine was what is referred to as 'competition funding', where the uni has several PhD topics proposed by members of staff and the student applies for one of the topics, without knowing whether it will go ahead). In my case, I prepared as I would for a job interview, going over the skills I had, why I wanted the place/funding, what ideas I could bring to the topic, and so on. I'm not sure if this is helpful, but in any interview I would say it's a good idea to practise beforehand with someone asking you questions if you can, as it helps you to form your answers.