Process Equipment and Plant Design
Fouling factor must be included in the calculation of over all design heat transfer coefficient, when the liquid

Containing suspended solids flows at low velocity
Is highly viscous
Containing suspended solids flows at high velocity
Is of high specific gravity

ANSWER DOWNLOAD EXAMIANS APP

Process Equipment and Plant Design
Smoker's equation for the calculation of number of equilibrium stages in a continuous binary distillation column is used, when the

Number of equilibrium stages required is likely to be very small
Relative volatility is close to one (e.g., separation of close boiling isomers)
Number of equilibrium stages in only stripping section is to be calculated
Feed is not at its bubble point

ANSWER DOWNLOAD EXAMIANS APP