Critical velocity in a pipe flow_________________?

Related Mcqs:

In Newton’s law range, the drag co-efficient for the motion of spherical particle in a stationary fluid is___________________?

A. 0.44 B. 0.044 C. 4.4 D. 44...

Power required by a centrifugal pump is proportional to (where, D = diameter, N = r.p.m) ________________?

A. N2D3 B. ND2 C. N2D D. N3D5...

The velocity for subsonic flow in a pipeline_______________?

A. Increases in the downstream direction B. Is constant C. Decreases in the downstream direction D. Is independent of the area of flow...

The maximum depth from which a centrifugal pump can draw water is________________?

A. Dependent on the speed of the pump B. Dependent on the power of the pump C. 34 feet D. 150 feet...

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 × 103 VOM + 10.94 × 106 V2 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 ?

A. 0.2 B. 0.5 C. 0.7 D. 0.8...