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Fluid Mechanics

Fluid Mechanics
Reynolds number for flow of water at room temperature through 2 cm dia pipe at an average velocity of 5 cm/sec is around

2000
1000
10
100

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Fluid Mechanics
Bed pressure drop in an air fluidised bed of catalyst particles (ρp = 200 kg/m³, Dp = 0.05 cm) of 60 cm bed depth and bed porosity of 0.5 expressed in cm of water (manometer) is

90
45
60
30

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Fluid Mechanics
Pressure drop in a fluidised bed reactor is __________ that in a similar packed bed reactor.

More than
Same as
Less than
None of these

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Fluid Mechanics
The Stoke's stream function applies to the

Cases of axial symmetry
None of these
Ideal/non-viscous fluids only
Irrotational flow only

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Fluid Mechanics
Bernoull's equation does not apply to the functioning of a/an

Orificem
Pitot tube
Venturimeter
None of these

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Fluid Mechanics
Rotary vacuum pumps can reduce the absolute pressure to as low as __________ mm Hg.

1
0.001
0.01
0.1

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