Mass Transfer
HETP is numerically equal to HTU, only when the operating line

And equilibrium lines are parallel
Is far from the equilibrium line
Lies below the equilibrium line
Lies above the equilibrium line

ANSWER DOWNLOAD EXAMIANS APP

Mass Transfer
Plate efficiency

Is a function of the mass transfer between liquid and vapour
Increases due to liquid entrainment
Increases due to weeping and dumping of liquid
Increases due to foaming

ANSWER DOWNLOAD EXAMIANS APP