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1. |
Which of the following is the correct equation for minimum fluidization velocity for large particles? Here, Dp is the diameter of the particle, P and F are the density of particle and fluid medium respectively, mf is the porosity and S is the shape factor. |
A. | U<sub>mf</sub><sup>2</sup> = ( frac {Dp ( P- F)g}{1.75 F} ) <sub>mf</sub><sup>3</sup> <sub>S</sub> |
B. | U<sub>mf</sub><sup>2</sup> = ( frac {Dp ( P- F)g}{1.75 P} ) <sub>mf</sub><sup>3</sup> <sub>S</sub> |
C. | U<sub>mf</sub><sup>2</sup> = ( frac {Dp ( P- F)g}{1.75 P} ) <sub>mf</sub><sup>2</sup> <sub>S</sub> |
D. | U<sub>mf</sub><sup>2</sup> = ( frac {Dp ( P- F)g}{1.75 F} ) <sub>mf</sub><sup>2</sup> <sub>S</sub> |
Answer» B. U<sub>mf</sub><sup>2</sup> = ( frac {Dp ( P- F)g}{1.75 P} ) <sub>mf</sub><sup>3</sup> <sub>S</sub> | |