Personal Interview format could be different for different types of personal interviews at different places. However, the personal interview format at IIMs and at other top B-schools means that there are 3-4 panelists who are experts and ask penetrating questions to you on your academics, work experience, current affairs, social issues, about your personality, your native place, on technical issues related to your academics and work place.
Whether it is the personal interview for freshers or from second timers, the personal interview format implies personal interaction session of 10 to 20 minutes before the experts. Apart from the one to one personal interaction session of 10-20 minutes, the PI round for MBA admission may consist of other different components also. This may include GD, WAT, Extempore speech, Group Interview, group exercise, psychometric tests among others.