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Hydraulics & Fluid Mechanics

Hydraulics & Fluid Mechanics
When a body floating in a liquid, is displaced slightly, it oscillates about

metacentre
e.g. of body
center of buoyancy
center of pressure

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Hydraulics & Fluid Mechanics
The horse power transmitted through a pipe is maximum when the ratio of loss of head due to friction and total head supplied is

1/4
1/3
1/2
2/3

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Hydraulics & Fluid Mechanics
The position of center of pressure on a plane surface immersed vertically in a static mass of fluid is

None of these
always above the centroid of the area
at the centroid of the submerged area
always below the centroid of the area

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Hydraulics & Fluid Mechanics
The region between the separation streamline and the boundary surface of the solid body is known as

wake
drag
boundary layer
lift

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Hydraulics & Fluid Mechanics
The discharge over a broad crested weir is maximum when the depth of flow is (where H is the available head)

2 H/3
2 H/5
H/3
H/2

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Hydraulics & Fluid Mechanics
The Prartdtl mixing length is

None of these
independent of shear stress
maximum at the pipe wall
zero at the pipe wall

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