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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
In order to avoid tendency of separation at throat in a Venturimeter, the ratio of the diameter at throat to the diameter of pipe should be

1/3 to 1/2
1/16 to 1/8
1/8 to 1/4
1/4 to 1/3

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Hydraulics and Fluid Mechanics in ME
Which of the following meters is not associated with viscosity

Red wood
Engler
Orsat
Say bolt

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Hydraulics and Fluid Mechanics in ME
Due to each end contraction, the discharge of rectangular sharp crested weir is reduced by

0.15
0.2
0.1
0.05

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

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

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Hydraulics and Fluid Mechanics in ME
Multistage centrifugal pumps are used to obtain

Pumping of viscous fluids
High discharge
High head
High head and high discharge

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Hydraulics and Fluid Mechanics in ME
The depth ā€˜d’ below the free surface at which the point velocity is equal to the average velocity of flow for a uniform laminar flow with a free surface, will be (where D is the depth of flow)

0.223 D
0.707 D
0.423 D
0.577 D

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