Fluid Mechanics
A venturimeter can not be used for the direct measurement of

Friction loss in pipe flow
Datum difference in the stretch of pipeflow
Pressure difference in the flow throughpipeline
All of these

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Fluid Mechanics
A bed of spherical particles (specific gravity 2.5) of uniform size 1500 μm is 0.5 m in diameter and 0.5 m high. In packed bed state, the porosity may be taken as 0.4. Ergun's equation for the above fluid-particle system (in SI units) is given below : Δ P/L = 375 x 10³ VOM + 10.94 x 10⁶ V²OM (SI units) If water is to be used as the fluidising medium, the minimum fluidisation velocity, VOM is

24 mm/s
12 mm/s
28 mm/s
16 mm/s

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