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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The value of coefficient of discharge is __________ the value of coefficient of velocity.

Same as
None of these
More than
Less than

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Hydraulics and Fluid Mechanics in ME
A uniform body 3 m long, 2 m wide and 1 m deep floats in water. If the depth of immersion is 0.6 m, then the weight of the body is

33.3 kN
35.3 kN
3.53 kN
None of these

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Hydraulics and Fluid Mechanics in ME
The fluid forces considered in the Navier Stokes equation are

gravity, pressure and viscous
pressure, viscous and turbulent
gravity, pressure and turbulent
gravity, viscous and turbulent

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Hydraulics and Fluid Mechanics in ME
The speed ratio in case of Francis turbine varies from

0.4 to 0.5
0.15 to 0.3
0.6 to 0.9
1 to 1.5

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Hydraulics and Fluid Mechanics in ME
A piece weighing 3 kg in air was found to weigh 2.5 kg when submerged in water. Its specific gravity is

6
1
7
5

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Hydraulics and Fluid Mechanics in ME
A flow is called sub-sonic, if the Mach number is

More than 6
Between 1 and 6
Less than unity
Unity

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