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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The water in a jet propelled boat is drawn through the openings facing the direction of motion of the boat. The efficiency of propulsion is given by

2V/(vr - v)
2V/(vr + v)
V/(vr + v)
V/(vr - v)

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Hydraulics and Fluid Mechanics in ME
A fluid whose viscosity does not change with the rate of deformation or shear strain is known as

Non-Newtonian fluid
Newtonian fluid
Ideal fluid
Real fluid

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

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

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Hydraulics and Fluid Mechanics in ME
An opening in the side of a tank or vessel such that the liquid surface with the tank is below the top edge of the opening, is called

Orifice
None of these
Weir
Notch

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

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

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Hydraulics and Fluid Mechanics in ME
If the atmospheric pressure on the surface of an oil tank (sp. gr. 0.8) is 0.2 kg/cm”, the pressure at a depth of 50 m below the oil surface will be

2 meters of water column
5 meters of water column
3 meters of water column
6 meters of water Column

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