Abstract: Background- Access to a skilled health professional and quality emergency obstetric care are important factors that improve maternal and perinatal mortality. In Medical simulation (drills) of emergency cases can give ample opportunity for post graduate students to learn, practice and finally can assess system weaknesses and strengths, test policies and procedures for coping with higher levels of competencies and thereby improve teamwork and management and communication skills of post graduates/staff members. Aim- We aimed to compare the effectiveness of traditional video demonstration vs. performing mock drill as a T-L METHOD in terms of competencies of postgraduate students regarding managing emergency clinical situations in OBGY and study perception of postgraduate students of both methods. Objectives1.To study and compare between change in WPBA SCORE of traditional video lecture and Mock drills on competencies of post graduate medical students in managing emergency clinical situation 2. To study perception of PG students about Mock drill as T-L tool in pg training. Result-There was significant difference in change in WPBA score of traditional video lecture and that of Mock drills on competencies of post graduate medical students in managing emergency clinical situation. The perception of PG students about Mock drill as T-L tool in pg training was good in terms of their confidence level for management of eclampsia. Conclusion- The improvement in WPBA score of mock drills is much better than that seen after video sessions on skill based competencies of post graduate medical students in managing emergency clinical situation. The higher level domain score improved with higher scores competencies improved the change in skill based competency assessment score was much more after mock drill than that after video session. The perceptions of students regarding their confidence level in diagnosing and managing improved more after Mock drill especially in psychomotor and affective domains.