PhD students must pass the qualifying examination within two years after enrollment (except for the period of leave). Students who have full-time jobs or are pregnant can extend for one year.
109-2 Notice-on-the-PhD.-Qualifying-Exam-Oral-Defense
Application-for-Ph.D.-Qualifying-Examination-of-Department-of-Physics
Bylaw of the requirements and the qualifying examination for PhD candidates
Guidelines-for-Qualification-of-PhDMaster-Thesis-Advisor-and-Degree-Examination-Committee-Member