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Fluid Mechanics

Fluid Mechanics
Plunger pumps are used for

Higher pressure
Viscous mass
None of these
Slurries

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Fluid Mechanics
A centrifugal pump used to pump water is used to pump an oil with specific gravity of 0.8 at the same rate. The power consumption will now

Increase
Decrease
Remain same
Data insufficient to predict

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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

100
2000
10
1000

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Fluid Mechanics
Transition from laminar flow to turbulent flow is aided by the

All of these
Pressure gradient and the compressibility of the flowing medium
Vibration
Surface roughness and curvature (i.e.sharp corners)

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Fluid Mechanics
The equation given below is called the __________ . f-0.5 = 4.07 loge (NRe√f)-0.6

None of these
Von-Karman equation
Fanning equation
Colebrook formula

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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

45
60
30
90

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