A. More
B. Less
C. Same
D. More or less; depends on the nature of solution
A. Laminar
B. Turbulent
C. Creeg
D. Transition region
A. t
B. 1/ρ
C. 1/A
D. All A., B. & C.
A. Large temperature differentials
B. High heat transfer co-efficient
C. Low pressure drop
D. Less corrosion of tubes
A. For fluids in laminar flow
B. For fluids in turbulent flow
C. When Grashoff number is very important
D. For liquid metals
A. Increases
B. Decreases
C. Remain same
D. Decreases linearly
A. Lower heat transfer area
B. Lower steam economy
C. Higher steam economy
D. Higher solute concentration in the product
A. Square pitch
B. Triangular pitch
C. Diagonal square pitch
D. None of these
A. Kirchoff’s
B. Planck’s
C. Wien’s displacement
D. Stefan-Boltzmann
A. Highest in last effect
B. Lowest in last effect
C. Same in all effects
D. Dependent on the number of effects