Pick out the correct statement about the condensation.
A. Filmwise condensation gives a lower heat transfer rate than the dropwise condensation
B. Suitable coating or vapour additive is used to promote film wise condensation
C. If a condensing liquid does not wet the surface dropwise, even then condensation will take place on it
D. Reynolds number of condensing liquid is based on its mass flow rate
Answer: Option B
This Question Belongs to Chemical Engineering >> Chemical Engineering Basics
Which of the following will resist maxi-mum shock & vibration without cracking?
A. Grey cast iron
B. White cast iron
C. Malleable iron
D. Graphite
A. Pulverised fuel
B. Travelling grate stoker firing
C. Circulating fluidised bed
D. Fluidised bed
Isotropic materials have the same __________ in all directions.
A. Induced stresses
B. Density
C. Elastic properties
D. Thermal properties
Join The Discussion