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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The specific speed of a centrifugal pump, delivering 750 liters of water per second against a head of 15 meters at 725 r.p.m., is

82.4 r.p.m.
248 r.p.m
48.2 r.p.m
24.8 r.p.m.

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

Horizontal
First rise and then fall
Nearly horizontal
Steep

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Hydraulics and Fluid Mechanics in ME
Equation of continuity is based on the principle of conservation of

None of these
momentum
energy
mass

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Hydraulics and Fluid Mechanics in ME
Units of surface tension are

both of the above
it has no units
distance
energy/unit area

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Hydraulics and Fluid Mechanics in ME
The discharge through a siphon spillway is

Cd × a × √(2g) × H3/2
Cd × a × √(2g) × H2
Cd × a × √(2gH)
Cd × a × √(2g) × H5/2

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