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) ?

Related Mcqs:

The critical speed of a trommel (N) is related to its dia D. as _____________________?

A. N ∝ 1/√D B. N ∝ √D C. N ∝ D D. N ∝ 1/D...

In filtration, the use of ‘filter aid’ helps in__________________?

A. Reducing the filtration pressure B. Accelerating the rate of filtration C. Deplugging the filter medium D. Enhancing the cake porosity in case of a dense impermeable cake...

Pick out the material having minimum Rittinger’s number?

A. Calcite B. Pyrite C. Quartz D. Galena...

Size reduction of asbestos and mica is done by____________________?

A. Hammer mills B. Rod mills C. Gyratory crushers D. Crushing rolls...

Velocity of a small particle of diameter ‘Dp’ at a distance ‘r’ from the rotational axis of a cyclone rotating at an angular speed ‘ω’ is given by (the other symbols are as per standard notation) ?

A. [(DP/18). (ρs – ρ/μ)] ω2r B. [(DP2/18). (ρs – ρ/μ)] ω2r C. [(DP/18). (ρs – ρ/μ)] ω2r2 D. [(DP2/18). (ρs – ρ/μ)] ω2r...