0:23 What is Transistor Biasing? 2:10 What is Q-point or Operating point? 3:03 Variations in Q-Point, 4:33 Q-point variations due to change in Temperature and Current gain (β), 5:21 Fixed bias configuration, DC Analysis and Stable operating point, 8:38 What is Load line? 12:20 Load line Variations due to Variations in Current gain (β).