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HYDRAULICS AND FLUID MECHANICS IN ME

Hydraulics and Fluid Mechanics in ME
A turbine develops 10000 kW under a head of 25 meters at 135 r.p.m. Its specific speed is

241.5 r.p.m.
175.4 r.p.m.
215.5 r.p.m.
275.4 r.p.m

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Hydraulics and Fluid Mechanics in ME
A square surface 3 m × 3 m lies in a vertical line in water pipe its upper edge at water surface. The hydrostatic force on square surface is

27,000 kg
18,000 kg
9,000 kg
13,500 kg

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Hydraulics and Fluid Mechanics in ME
The absolute pressure is equal to

Gauge pressure - vacuum pressure
Atmospheric pressure - gauge pressure
Gauge pressure + atmospheric pressure
Gauge pressure - atmospheric pressure

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Hydraulics and Fluid Mechanics in ME
The Newton's law of resistance is based on the assumption that the

Planes of the body are completely smooth
All of these
Fluid particles do not exert any influence on one another
Space around the body is completely filled with the fluid

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Hydraulics and Fluid Mechanics in ME
If the coefficient of discharge is 0.6, then the discharge over a right angled notch is

4.171 H5/2
1.417 H5/2
0.417 H5/2
7.141 H5/2

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