Hi,
Dr. Somerville interviewed me last year when I was applying for the same course (Pet Eng). After about 15mins, the interview was over.
The interview centered mainly on my Undergraduate studies. Questions asked included, what did you do in your undergraduate project? What were the materials you used for the project? What were the calculations done and the results of those calculations? What are duties of a Pet. Engineer? and a few other questions.
Just remember what you did in your undergraduate project.
The interview took place at about 10:30am, by 3pm that same day a scanned copy of my admission letter was sent
to my e-mail box.
Wish you success