Dropwise condensation is promoted on a/an ______________ surface?
Dropwise condensation is promoted on a/an ______________ surface?
A. Glazed
B. Oily
C. Coated
D. Smooth
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Multiple effect evaporation is generally recommended, when the______________________?
Multiple effect evaporation is generally recommended, when the______________________?A. Large scale evaporation of liquor is needed
B. Corrosive liquids are to be concentrated
C. Fuel is cheaply available
D. Evaporation on small scale is to be doneThe type of liquor circulation system to be ‘ employed in evaporators (viz. natural or forced circulation) is determined mainly by the ______________ of the liquid?
The type of liquor circulation system to be ‘ employed in evaporators (viz. natural or forced circulation) is determined mainly by the ______________ of the liquid?A. Viscosity
B. Density
C. Thermal conductivity
D. Corrosive natureGraetz number is given by__________________?
Graetz number is given by__________________?A. mCp/kL
B. kL/mCp
C. mCp/kμ
D. kμ/mCpThe film thickness for laminar film condensation on vertical surface _____________ from top to bottom?
The film thickness for laminar film condensation on vertical surface _____________ from top to bottom?A. Cumulatively increases
B. Cumulatively decreases
C. Remain constant
D. And the surface conductance increaseFqra cold viscous feed, backward feed gives _____________ than forward feed?
Fqra cold viscous feed, backward feed gives _____________ than forward feed?A. A higher capacity
B. A lower capacity
C. Lower economy
D. None of theseIn Fourier’s law, the proportionality constant is called the______________________?
In Fourier’s law, the proportionality constant is called the______________________?A. Heat transfer co-efficient
B. Thermal diffusivity
C. Thermal conductivity
D. Stefan-Boltzmann constant