If you are confused about selecting the right topic for your dissertation, then follow these simple, quick tips to save your time. You should first think about a topic(s) that you are motivated to handle and are passionate about. Then, consider what kinds of problems you may easily handle using your knowledge base.
Review some literature in your areas of interest and find out a significant field having wider scope for further research and newer problems. You may also select a topic based on ample research availability. Finally, choose something new to investigate that is feasible to perform within your timeframe and resources.