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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
Discharge (Q) of a centrifugal pump is given by (where D = Diameter of impeller at inlet, b = Width of impeller at inlet, and Vf = Velocity of flow at inlet)

Q = π.D.bf.V
Q = D.b.Vf
Q = π.D.Vf
Q = π.b.Vf

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Hydraulics and Fluid Mechanics in ME
In an immersed body, center of pressure is

at the center of gravity
could be above or below e.g. depending on density of body and liquid
below be center of gravity
above the center of gravity

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Hydraulics and Fluid Mechanics in ME
Metacentre is the point of intersection of

mid point between e.g. and center of buoyancy
vertical upward force through e.g. of body and center line of body
buoyant force and the center line of body
All of these

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Hydraulics and Fluid Mechanics in ME
Guide angle as per the aerofoil theory of Kaplan turbine blade design is defined as the angle between

Lift and resultant force
Lift and drag
Lift and tangential force
Drag and resultant force

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Hydraulics and Fluid Mechanics in ME
A venturi-flume is used to measure

Pressure of liquid
Pressure difference between two points in a pipe
Discharge of liquid
Pressure difference between two points in a channel

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Hydraulics and Fluid Mechanics in ME
When a cylindrical vessel of radius (r) containing liquid is revolved about its vertical axis ω rad/s, then depth of parabola which the liquid assumes is

ω.r/2g
ω².r²/2g
ω².r²/4g
ω.r/4g

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MORE MCQ ON Hydraulics and Fluid Mechanics in ME

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