Hello Tushara,

I am not sure of what BEE you mean to tell us but I assume it's Basics of Electrical Engineering. If so, then I'll tell you the important topics to focus on for first year Semester 1 exam:

• Network theorems: Superposition theorem, Norton's Theorem, Thevenin's Theorem, Maximum Power Transfer Theorem, Kirchoff's Laws
• AC Analysis: R-L circuit, R-C circuits, R-L-C circuits