As a project manager, it is your job to oversee the creation and execution of company projects and ensure that all team members stay on track to meet deadlines. Expect interview questions that will assess your ability to lead a group and communicate effectively to members with different roles and varying concerns. As the scope, schedule, and cost of a project can change frequently, the interviewer may ask you to role-play a few scenarios in which a project deadline changes or several group members leave the company.
By what criteria do you judge your own performance?
Clearly there is no one answer as for any question. This is about the situation, your interaction with other people and what mortivates you.