Fluid Mechanics - Study Mode
[#381] 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 × 10 3 V OM + 10.94 × 10 6 V 2 OM (SI units) If water is to be used as the fluidising medium, in actual operation, the above bed has a height = 1 m. What is the porosity of the fluidised bed?
Correct Answer
(C) 0.7
[#382] If the discharge of a centrifugal pump is throttled, then its suction lift
Correct Answer
(A) Increases
[#383] The discharge through a V-notch weir varies as
Correct Answer
(C) $${{ ext{H}}^{frac{5}{2}}}$$
[#384] The pressure head on sudden contraction in a horizontal pipe is converted into the __________ head.
Correct Answer
(B) Velocity
[#385] __________ forces do not act in case of fluid flow.
Correct Answer
(B) Tensile