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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The stress-strain relation of the Newtonian fluid is

Linear
Inverse type
Hyperbolic
Parabolic

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Hydraulics and Fluid Mechanics in ME
When the coefficient of discharge (Cd) is 0.623, then the general equation for discharge over a rectangular weir is

1.84(L - 0.1nH)H3/2
1.84(L - 0.1nH)H5/2
1.84(L - nH)H3
1.84(L - nH)H2

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

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

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Hydraulics and Fluid Mechanics in ME
Metacentric height for small values of angle of heel is the distance between the

centre of gravity and metacentre
centre of buoyancy and metacentre
free surface and centre of buoyancy
centre of gravity and centre of buoy-ancy

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Hydraulics and Fluid Mechanics in ME
In a Francis turbine runner, the numbers of blades are generally between

4 to 8
16 to 24
8 to 16
2 to 4

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Hydraulics and Fluid Mechanics in ME
The total energy of each particle at various places in the case of perfect incompressible fluid flowing in continuous stream

Keeps on increasing
Keeps on decreasing
Remain constant
May increase/decrease

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