Weber number is significant and is concerned with the solid-liquid mixing. liqui

CuriousTab

CuriousTab

Home Aptitude

Discussion

Home ‣ Chemical Engineering ‣ Mechanical Operations Comments

Question
Weber number is significant and is concerned with the
Options
A. solid-liquid mixing.
B. liquid-liquid mixing.
C. dispersion of liquid in liquid.
D. suspension of solid in liquid.

Correct Answer

dispersion of liquid in liquid.

Mechanical Operations problems

Search Results

1. Which of the following can be most effectively used for clarification of lube oil and printing ink?
Options
A. Sparkler filter
B. Precoat filter
C. Disc-bowl centrifuge
D. Sharpies supercentrifuge

3. The basic filtration equation is given as where, V is volume of the filtrate ; A is the filtration area, a is specific cake resistance, ? is viscosity of the filtrate, and C is the concentration of the solids in the feed slurry.
In a 20 minutes constant rate filtration, 5 m³ of filtrate was obtained. If this is followed by a constant pressure filtration, how much more time in minutes, it will take for another 5 m³ of filtrate to be produced? Neglect filter medium resistance, Rm ; assume incompressible cake.
Options
A. 10
B. 20
C. 25
D. 30

5. Cartridge filters are termed as 'edge' filters, because of the fact that the
Options
A. disks have very sharp edge.
B. solids are not deposited at the edge of the disk.
C. bulk of the solids are removed at the periphery of the disks.
D. none of these.

7. The capacity of a classifier in 'tons of solid/hr' is given by (where, A = cross-sectional area, m² V = rising velocity of fluid, m/sec.S = percentage of solids in the suspension by volume.? = density of solids, kg/m³)
Options
A. 3.6 AVS.?
B. 3.6 A.V.?
C. 3.6 A.S. ?
D. 3.6 AVS/?

8. The porosity of a compressible cake is
Options
A. minimum at the filter medium.
B. minimum at the upstream face.
C. maximum at the filter medium.
D. same throughout the thickness of cake.

Comments

More in Chemical Engineering: