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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The depth of the center of pressure on a vertical rectangular gate 8 m wide and 6 m high, when the water surface coincides with the top of the gate, is

2.4 m
4.0 m
2.5 m
3.0 m

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Hydraulics and Fluid Mechanics in ME
Which of the following turbine is preferred for a specific speed of 60 to 300 r.p.m.?

None of these
Pelton wheel
Francis turbine
Kaplan turbine

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Hydraulics and Fluid Mechanics in ME
The error in discharge (dQ/Q) to the error in measurement of head (dH/H) over a triangular notch is given by

dQ/Q = 5/2 × (dH/H)
dQ/Q = 2 × (dH/H)
dQ/Q = 3/2 × (dH/H)
dQ/Q = 3 × (dH/H)

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Hydraulics and Fluid Mechanics in ME
Capillary action is due to the

All of the listed here
Surface tension
Cohesion of the liquid
Adhesion of the liquid molecules and the molecules on the surface of a solid

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Hydraulics and Fluid Mechanics in ME
The flow of water through the hole in the bottom of a wash basin is an example of

Free vortex
Steady flow
Forced vortex
Uniform flow

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Hydraulics and Fluid Mechanics in ME
A flow is called hyper-sonic, if the Mach number is

Between 1 and 6
Unity
None of these
Less than unity

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