Drag force is a function of________________?

Question: Dean number is concerned with the
[A].

fluid-particle interaction.

[B].

fluid flow through helical pipes.

[C].

power consumption in agitated vessels.

[D].

psychrometry.

Answer: Option B

Explanation:

No answer description available for this question.

Question: 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
[A].

12 mm/s

[B].

16 mm/s

[C].

24 mm/s

[D].

28 mm/s

Answer: Option B

Explanation:

No answer description available for this question.

Question: Nominal size of the discharge pipe of a pump is usually __________ the nominal size of the inlet pipe.
[A].

smaller than

[B].

larger than

[C].

same as

[D].

twice

Answer: Option A

Explanation:

No answer description available for this question.

Question: In frictional fluid flow, the quantity, , is
[A].

constant along a streamline.

[B].

not constant along a streamline.

[C].

increased in the direction of flow.

[D].

none of these.

Answer: Option B

Explanation:

No answer description available for this question.