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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
Euler's number is the ratio of __________ force to pressure force.

None of these
Gravity
Viscous
Inertia

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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

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

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Hydraulics and Fluid Mechanics in ME
Dynamic similarity is said to exist between the model and the prototype, if both of them

Are equal in size and shape
Are identical in shape, but differ only in size
None of these
Have identical velocities

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Hydraulics and Fluid Mechanics in ME
The power developed by a turbine is (where H = Head of water under which the turbine is working)

Directly proportional to H3/2
Inversely proportional to H3/2
Directly proportional to H1/2
Inversely proportional to H1/2

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Hydraulics and Fluid Mechanics in ME
The hydraulic grade line is

never above the energy grade line
All of these
always above the centre line of pipe
always sloping downward in the direction of flow

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Hydraulics and Fluid Mechanics in ME
A piece of wood having weight 5 kg floats in water with 60% of its volume under the liquid. The specific gravity of wood is

0.3
0.6
0.83
0.4

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