A. Reynold’s
B. Froude
C. Both A. & B.
D. Neither A. nor B.
Related Mcqs:
- Which of the following agitators having a large blade area, rotating at slow speed is used for mixing high viscosity liquids (> 50000 centipoise) ?
A. Propeller
B. Helical screw
C. Flat blade turbine
D. Curved blade turbine - Mixing mechanism employed in a pan mixer is by ________________?
A. Mulling
B. Kneading
C. Dispersion
D. None of these - Which of the following clay mixing devices is vacuum operated for deairation of clay ?
A. Banbury mixer
B. Pug mill
C. Muller-mixer
D. None of these - Mixing of plastic solids is generally facilitated by___________________?
A. Dispersion
B. Mastication
C. Kneading
D. None of these - Mixing of light fine powder such as insecticides is done by____________________?
A. Banbury mixer
B. Pug mill
C. Impact wheels
D. Kneader - In a mixer, the quantity, (v. L/D) is termed as __________ number (where, v = longitudinal velocity of material, L = length of the mixer, D = diffusivity in axial mixing) ?
A. Weber
B. Peclet
C. Brinkman
D. Schmidt - In a size reduction crushing operation, feed size is 100 to 300 mm. while the product size is 10 to 50 mm. This is a case of the _____________ crushing?
A. Primary
B. Secondary
C. Fine
D. Ultrafine - Filtration operation carried out by continuous increase of the inlet pressure of slurry, is called the _____________ filtration?
A. Constant rate
B. Varying pressure
C. Varying rate
D. Constant pressure - Sizing of very fine particles of the order of 5 to 10 microns is done by elutriation, which is a _____________ operation?
A. Clarification
B. Sedimentation
C. Flocculation
D. Classification - Energy requirement (per unit mass of material crushed/ground) is highest for__________________?
A. Jaw crusher
B. Rod mill
C. Ball mill
D. Fluid energy mill
