Dropwise condensation usually occurs on
glazed surface
smooth surface
oily surface
coated surface
Answer
With an increase in excess temperature, the heat flux in boiling
increases continuously
decreases and then increases
decreases, and then increases and again decreases
increases then decrease and again increases
The excess temperature range 50°C<∆T<200°C is indicative of the region of
interface evaporation
nuclear boiling
partial film boiling
stable film boiling
Leiden frost effect is associated with
evaporation of a solution
boiling of liquid on a hot surface
exchange of heat between two fluids
condensation of vapour on a cold surface
Heat flux increases with temperature excess beyond the Leiden frost point due to
the occurrence of subcooled boiling
promotion of nucleate boiling
radiation effect becomes predominant
vapour space becomes large