A. Small
B. Large
C. All
D. One fixed
A black body when hot, emits heat radiation of _____________ wavelengths? Read More »
Chemical Heat Transfer A. Decreases
B. Increases
C. Remain constant
D. First decreases upto certain temperature and then increases
A. Tube side pressure drop and the heat transfer rate
B. Convective heat transfer co-efficient
C. Effective tube surface area for convective heat transfer
D. All A. B. and C.
A. 0.5
B. 2
C. 10
D. 100
A. Temperature gradient
B. Mechanical strength of the equipment
C. Heat transfer area
D. Heat transfer co-efficient
A. Pool
B. Nucleate
C. Transition
D. Film
A. Foaming
B. Viscous
C. Very thin
D. Corrosive
Agitated film evaporator is suitable for concentrating _____________ liquids? Read More »
Chemical Heat Transfer A. Monochromatic radiation only
B. Total radiation only
C. Both A. and B.
D. Only volumes and not to surfaces
Kirchoff’s law is applicable to________________? Read More »
Chemical Heat Transfer A. Low Reynold’s number
B. Very low Grashoff number
C. Molten metals
D. All A., B. and C.
A. 11.2 kW/m2
B. 12.0 kW/m2
C. 14.6 kW/m2
D. 16.5 kW/m2
