Prandtl number is given by__________________?
Prandtl number is given by__________________?
A. CP μ/a
B. hD/k
C. CP μ/k
D. μ/h CP
Similar Posts
When vaporisation takes place through a blanketting film of gas, the phenomenon is termed as ___________________ boiling?
When vaporisation takes place through a blanketting film of gas, the phenomenon is termed as ___________________ boiling?A. Pool
B. Nucleate
C. Transition
D. FilmWith increase in porosity, the thermal conductivity of a solid substance__________________?
With increase in porosity, the thermal conductivity of a solid substance__________________?A. Increases
B. Decreases
C. Remains unchanged
D. May increase or decrease; depends on the solidThe rate of heat transfer from a vertical plate by natural convection depends upon the temperature differences (ΔT) between wall and outside bulk. The proportionality is given as______________?
The rate of heat transfer from a vertical plate by natural convection depends upon the temperature differences (ΔT) between wall and outside bulk. The proportionality is given as______________?A. (ΔT)1/4
B. (ΔT)1/2
C. (ΔT)5/4
D. (ΔT)3/4In case of a vertical tube evaporator, with increase in the liquor level, the___________________?
In case of a vertical tube evaporator, with increase in the liquor level, the___________________?A. Capacity of the evaporator is decreased
B. Capacity of the evaporator is increased
C. True temperature drop increases
D. Both B. and C.An ejector is used to__________________?
An ejector is used to__________________?A. Increase pressure
B. Increase temperature
C. Remove condensate
D. None of theseArithmetic mean area can be used in heat transfer problem to calculate the heat flow by conduction through a cylinder which is ____________________?
Arithmetic mean area can be used in heat transfer problem to calculate the heat flow by conduction through a cylinder which is ____________________?A. Thin walled having the value of Ao Ai/< 2
B. Thick walled
C. Having the value of Ao/Ai > 2
D. Both B. and C.