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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The Francis formula for the discharge over Cipoletti weir is

1.84 LH5/2
1.84 LH1/2
1.84 LH3/2
1.84 LH

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Hydraulics and Fluid Mechanics in ME
A flow through an expanding tube at constant rate is called

Steady uniform flow
Unsteady uniform flow
Unsteady non-uniform flow
Steady non-uniform flow

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Hydraulics and Fluid Mechanics in ME
The loss of head due to viscosity for laminar flow in pipes is (where d = Diameter of pipe, l = Length of pipe, v = Velocity of the liquid in the pipe, μ = Viscosity of the liquid, and w = Specific weight of the flowing liquid)

16μvl/wd²
8μvl/wd²
32μvl/wd²
4μvl/wd²

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Hydraulics and Fluid Mechanics in ME
The losses are more in

laminar flow
turbulent flow
critical flow
transition flow

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Hydraulics and Fluid Mechanics in ME
When a piping system is made up primarily of vertical lift and very little pipe friction, the pump characteristics should be

First rise and then fall
Horizontal
Nearly horizontal
Steep

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Hydraulics and Fluid Mechanics in ME
The specific weight of water in S.I. units is taken as

9.81 × 103 N/m3
9.81 × 10-6 N/mm3
9.81 kN/m3
Any one of these

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