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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The equation of continuity holds good when the flow

is steady
is one dimensional
All of these
velocity is uniform at all the cross sec-tions

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Hydraulics and Fluid Mechanics in ME
Kinematic viscosity is dependent upon

Density
Pressure
Flow
Distance

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Hydraulics and Fluid Mechanics in ME
In order to increase sensitivity of U-tube manometer, one leg is usually inclined by angle 'θ'. Sensitivity of inclined tube to sensitivity of U-tube is equal to

1/Cosθ
1/Sinθ
Cos θ
Sinθ

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Hydraulics and Fluid Mechanics in ME
A jet of water discharging from a 40 mm diameter orifice has a diameter of 32 mm at its vena contracta. The coefficient of contraction is

0.78
0.46
0.87
0.64

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Hydraulics and Fluid Mechanics in ME
A Pelton wheel working under a constant head and discharge, has maximum efficiency when the speed ratio is

0.46
0.56
0.36
0.26

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Hydraulics and Fluid Mechanics in ME
The depth of the center of pressure on a vertical rectangular gate 8 m wide and 6 m high, when the water surface coincides with the top of the gate, is

3.0 m
2.5 m
4.0 m
2.4 m

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