A. Heating volume
B. Heat transfer area
C. Nusselt number
D. None of these
A. Grashoff
B. Reynolds
C. Both ‘a’ & ‘b’
D. Prandtl & Grashoff
A. Cumulatively increases
B. Cumulatively decreases
C. Remain constant
D. And the surface conductance increase
A. Facilitate the cleaning of outer tube surface
B. Enhance turbulence
C. Hold the tubes in position
D. All A , B & C
A. Total heat transfer area of all the effects is -less than that in a single effect evaporator system
B. Total amount of vapor produced per Kg of feed steam in a multiple effect system is much
higher than in a single effect
C. Boiling point elevation in a single effect system is much higher than that in any effect in a
multi-effect system
D. Heat transfer co-efficient in a single effect is much lower than that in any effect in a multieffect
system
A. Prandtl number
B. Grashoff number
C. Thermal conductivity
D. Viscosity
A. Volume to surface area
B. Perimeter to surface area
C. Surface area to volume
D. Surface area to perimeter