1963Chemical EngineeringMedium
At what value of Prandtl number, conduction is negligible in the turbulent core of a fluid flowing through a heated pipe?
A< 0.1
B> 0.6
C0.5
Correct answer
B. > 0.6
Explanation
The correct answer is > 0.6.
Correct answer
B. > 0.6
Explanation
The correct answer is > 0.6.
Rittinger’s number designates the new surface created per unit mechanical energy absorbed by the material being crushed. Larger value of Rittinger’s number of a material indicates its________?
Hydraulic mean depth (Dm) for a circular pipe of diameter ‘D’ flowing full is 0.25 D. For a circular channel, at Dm = 0.3 D, gives the condition for the maximum?
Green house effect is accentuated by________?
Presence of SO2 in furnace gases attacks the ferrous metal by way of________?
Celluloid is chemically________?
Dropwise condensation is promoted on a/an ________ surface?