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Chemical Engineering - Fluid Mechanics

Exercise : Fluid Mechanics - Section 7
46.
For liquid flow through a packed bed, the superficial velocity as compared to average velocity through the channel in the bed is
more
less
equal
independent of porosity
Answer: Option
Explanation:
No answer description is available. Let's discuss.
47.
For a reciprocating pump, the indicator diagram is the graph between the
discharge and overall efficiency.
volume swept by piston for one complete revolution and the pressure in the cylinder.
angle swept by the crank pin at any instant and the discharge.
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
48.
The most important factor, which determines the maximum height to which water can be lifted by a pump at standard temperature is the
barometric pressure
speed of the impeller
diameter of the impeller
both (b) and (c)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
49.
High specific speed of a pump implies that, it is a/an __________ pump.
centrifugal
mixed flow
axial flow
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
50.
A gas (density = 1.5 kg/m3 , viscosity = 2x 10-5 kg/m.s) flowing through a packed bed (particle size = 0.5 cm, porosity = 0.5) at a superficial velocity of 2 m/s causes a pressure drop of 8400 Pa/m. The pressure drop for another gas, with density of 1.5kg/m3and viscosity of 3 x 10-5kg/m.s flowing at 3 m/s will be
8400 Pa/m
12600 Pa/m
18900 Pa/m
16800 Pa/m
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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