Which of the following forced convection heat transfer equation accounts for the liquid viscosity effect for viscous liquids ?

ANS:B - Sieder-Tate equation

Among the options provided, the Sieder-Tate equation accounts for the effect of liquid viscosity for viscous liquids in forced convection heat transfer. The Sieder-Tate equation is an empirical correlation used to calculate the Nusselt number for forced convection heat transfer in viscous liquids flowing through pipes. It includes a correction factor to account for the influence of liquid viscosity on heat transfer. So, the correct answer is: "Sieder-Tate equation"