Filtrate flow rate in case of a rotary drum vacuum filter (in which Rm < < Rc) is proportional to ____________ and the cycle time (where, μ = filtrate viscosity Rm = filter medium resistance Rc = cake resistance)?

Related Mcqs:

1. The basic filtration equation is given as dt/dV = (μ/A ΔP). [(α .CV/A) + Rm], where, V is volume of the filtrate; A is the filtration area, a is specific cake resistance, μ 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 ?

   A. 10 B. 20 C. 25 D. 30...

2. Filtration rate through a filter cake is proportional to (where, S = filtering surface R = specific cake resistance μ = viscosity of the filtrate) ?

   A. S B. 1/R C. 1/μ D. All A., B. & C....

3. Filter aids like asbestos, kieselguhr, diatomaceous earth etc. are used to increase the porosity of the final filter cake & reducing the cake resistance during filtration. Filter aid is_______________?

   A. Added to the feed slurry B. Pre-coated on the filter medium prior to filtration C. Separated from the cake by dissolving solids or by burning it off D. All A, B. & C....

4. Vacuum is applied in _______________ zone, in case of a general type continuous rotary drum vacuum filter?

   A. Filtering B. Washing C. Drying D. All A., B. & C....

5. The controlling resistance in a rotary drum vacuum filter is the ________________ resistance?

   A. Piping B. Cake C. Filter medium D. None of these...

6. In case of a plate and frame filter press, filtrate flow through the cake follows _______________ flow?

   A. Plug B. Turbulent C. Laminar D. None of these...

7. Percentage of drum submerged in the slurry in case of rotary drum filter is ________________?

   A. 3 B. 30 C. 85 D. 25...

8. With increase in drum speed, in a rotary drum filter, the filtration rate_______________?

   A. Increases B. Increases linearly C. Decreases D. Is not affected...

9. Filtration capacity of a rotary drum vacuum filter depends upon the_______________?

   A. Cake thickness B. Characteristics of the feed slurry C. Both A. & B. D. Neither A. nor B....

10. The speed of a rotary drum vacuum filter may be about _____________ rpm?

    A. 1 B. 50 C. 100 D. 500...