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Chemical Engineering - Fluid Mechanics

Exercise : Fluid Mechanics - Section 14
41.
The pressure drop per unit length of pipe incurred by a fluid 'X' flowing through pipe is Δp. If another fluid 'Y' having both the specific gravity & density just double of that of fluid 'X', flows through the same pipe at the same flow rate/average velocity, then the pressure drop in this case will be
Δp
2Δp
Δp2
Δp/2
Answer: Option
Explanation:
No answer description is available. Let's discuss.
42.
Fluid flow in a/an __________ is an example of pressure flow.
partially filled pipeline
pipe
open channel
river.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
43.
In the laminar boundary layer flow over a flat plate, the ratio (δ/x) varies as :(where, 'δ' is the boundary layer thickness and 'x' is the distance from the leading edge in the direction of flow).
Re
Re
1/Re
Re-1/2
Answer: Option
Explanation:
No answer description is available. Let's discuss.
44.
A rotameter through which air at room temperature and atmospheric pressure is flowing gives a certain reading for a flow rate of 100 cc/sec. If helium (molecular weight 4) is used and rotameter shows the same reading, the flow rate (cc/sec) is
26
42
269
325
Answer: Option
Explanation:
No answer description is available. Let's discuss.
45.
A 0.5 m high bed made up of a 1 mm dia glass sphere (density 2500 kg/m3 ) is to be fluidised by water (density 1000 kg/m3 ). If at the point of incipient fluidisation, the bed voidage is 40%, the pressure drop across the bed is
4.4 KPa
2.94 KPa
3.7 KPa
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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