The power number for a stirred tank becomes constant at high Reynolds number. In this limit, the variation of power input with impeller rotational speed (N) is proportional to___________________?

Related Mcqs:

At low Reynold’s number, the power (P) required for agitating a fluid in a stirred tank becomes independent of inertial forces. In this limit, indicate which of the following relations is satisfied: Po = ρ/ρN3 D5: Power number Re = ρ N D2/μ: Reynold’s number N is the impeller rotational speed, and D is the impeller diameter ?

A. Po ∝ Re-1.0 B. Po ∝ Re0.0 C. Po ∝ Re0.5 D. Po ∝ Re1.0...

Pick out the wrong statement ?

A. More commonly used jaw crusher between Dodge jaw crusher and Blake jaw crusher is the later one B. There are only four methods namely compression, impact, attrition and cutting, which the size reduction equipments employ C. Cutting machines mainly employ ‘attrition’ for size reduction of solids D. Operating principles of Dodge and Blake jaw … Pick out the wrong statement ?Read More...

In a size reduction crushing operation, the feed size is 10 to 50 mm, while the product size is 2 to 10 mm. This is a case of _______________ crushing?

A. Primary B. Secondary C. Fine D. Ultrafine...

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....

Which of the following may prove unsuitable for filtering volatile liquids ?

A. Pressure filter B. Gravity filter C. Centrifugal filter D. Vacuum filter...