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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
When a piping system is made up primarily of friction head and very little of vertical lift, then pump characteristics should be

Steep
Nearly horizontal
First rise and then fall
Horizontal

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Hydraulics and Fluid Mechanics in ME
Medium specific speed of a pump implies it is

Mixed flow pump
Centrifugal pump
Any one of the above
Axial flow pump

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Hydraulics and Fluid Mechanics in ME
Which of the following is used to measure the discharge ?

current meter
hotwire anemometer
venturimeter
pitot tube

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Hydraulics and Fluid Mechanics in ME
In an isothermal atmosphere, the pressure

decreases linearly with elevation
increases exponentially with elevation
varies in the same way as the density
remains constant

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Hydraulics and Fluid Mechanics in ME
When the coefficient of discharge (Cd) is 0.623, then the general equation for discharge over a rectangular weir is

1.84(L - 0.1nH)H3/2
1.84(L - nH)H2
1.84(L - nH)H3
1.84(L - 0.1nH)H5/2

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

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