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Hydraulics and Fluid Mechanics in ME

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
A vertically immersed surface is shown in the below figure. The distance of its centre of pressure from the water surface is

(bd²/12) + x̅
b²/12 + x̅
(d²/12 x̅) + x̅
d²/12 + x̅

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Hydraulics and Fluid Mechanics in ME
A flow in which the volume of a fluid and its density does not change during the flow is called _________ flow.

Compressible
None of these
Viscous
Incompressible

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Hydraulics and Fluid Mechanics in ME
Falling drops of water become spheres due to the property of

cohesion
adhesion
viscosity
surface tension

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Hydraulics and Fluid Mechanics in ME
Power required (in watts) to drive a centrifugal pump is (where Hm = Manometric head in metres, w = Specific weight in N/m3, Q = Discharge of the pump in m3/s, and ηo = Overall efficiency of the pump)

(w Hm Q) / ηo
(w Hm) / (Q × ηo)
(w Q) / (Hm × ηo)
(w Q ηo) / Hm

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Hydraulics and Fluid Mechanics in ME
Pitot tube is used for measurement of

dsscharge
velocity
flow
pressure

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