A. Condensation of the saturated vapor on a cold surface
B. Concentration of a corrosive solution by evaporation
C. Heat transfer between two highly viscous liquids
D. Boiling of a liquid on a hot surface
Related Mcqs:
- Overall thermal resistance for conductive heat transfer through a series of flat resistances is equal to the____________________?
A. Maximum resistance in the series
B. Sum of all resistances
C. Average of all resistances
D. Minimum resistance presents in the series - If Prandtl number is greater than the Schmidt number, then the____________________?
A. Thermal boundary layer lies inside the concentration boundary layer
B. Concentration boundary layer lies inside the thermal boundary layer
C. Thermal & concentration boundary layers are of equal thickness
D. Hydrodynamic (i.e., momentum) boundary layer is thicker than the other two - For a perfectly transparent surface (like gases), the____________________?
A. Absorptivity = 0
B. Transmissivity = 1
C. Reflectivity = 0
D. All A., B. & C. - Which of the following is directly concerned with the heat transfer ?
A. Strouhal number
B. Sherwood number
C. Euler number
D. Grashoff number - The Graetz number is concerned with the___________________
A. Mass transfer between a gas and a liquid
B. Absorption with chemical reaction
C. Heat transfer in turbulent flow
D. Heat transfer in laminar flow - Which of the following is not concerned with the heat transfer ?
A. Brinkman number
B. Stanton number
C. Schmidt number
D. Peclet number - Which of the following is concerned with both heat and mass transfer ?
A. Lewis relationship
B. Nusselt number
C. Kutateladze number
D. Froude number - Fluid motion in the natural convection heat transfer between a solid surface and a fluid in contact with it, results from the_________________?
A. Existence of thermal boundary layer
B. Temperature gradient produced due to density difference
C. Buoyancy of the bubbles produced at active nucleation site
D. None of these - Cpμ/K is termed as the ______________ number?
A. Grashoff
B. Nusselt
C. Prandtl
D. Stanton - In case of heat transfer by conduction in a hollow cylinder, ______________ mean area is used to calculate the heat transfer rate?
A. Geometric
B. Arithmetic
C. Logarithmic
D. Either A., B. or C.
