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Umf is the minimum fluidisation velocity for a bed of particles. An increase in the superficial gas velocity from 2 Umf to 2.5 Umf results in (all velocities are smaller than the entrainment velocity of the particles) no change in the | |
A. | drag on particles [Wrong Answer] |
B. | drag on coloumn walls [Wrong Answer] |
C. | bed height [Correct Answer] |
D. | bed voidage [Wrong Answer] |