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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
Which of the following velocity potentials satisfies continuity equation ?

x2 + y2
x2y
x2-y2
cosx

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Hydraulics and Fluid Mechanics in ME
In an isothermal atmosphere, the pressure

varies in the same way as the density
increases exponentially with elevation
decreases linearly with elevation
remains constant

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Hydraulics and Fluid Mechanics in ME
Any change in load is adjusted by adjusting following parameter on turbine

Absolute velocity
Blade velocity
Net head
Flow

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Hydraulics and Fluid Mechanics in ME
The centre of pressure for a vertically immersed surface lies at a distance equal to __________ the centre of gravity.

IG / Ax̅ above
Ax̅ / IG below
Ax̅ / IG above
IG / Ax̅ below

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Hydraulics and Fluid Mechanics in ME
The unit discharge through the turbine is

Q/√H
Q/H
Q/H²
Q/H3/2

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Hydraulics and Fluid Mechanics in ME
The discharge over a triangular notch is

Directly proportional to H5/2
Inversely proportional to H3/2
Inversely proportional to H5/2
Directly proportional to H3/2

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