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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
An average value of coefficient of velocity is

0.97
0.62
0.76
0.84

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Hydraulics and Fluid Mechanics in ME
Francis turbine is best suited for

All types of heads
High head installation above 180 m
Medium head application from 24 to 180 m
Low head installation up to 30 m

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Hydraulics and Fluid Mechanics in ME
The pressure in the air space above an oil (sp. gr. 0.8) surface in a tank is 0.1 kg/cm". The pressure at 2.5 m below the oil surface will be

2 metres of water column
3.5 metres of water column
3 metres of water column
4 m of water column

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Hydraulics and Fluid Mechanics in ME
The value of mass density in kgsecVm4 for water at 0°C is

1
1000
100
101.9

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Hydraulics and Fluid Mechanics in ME
Centre of buoyancy always

coincides with the centroid of the volume of fluid displaced
remains above the centre of gravity
coincides with the centre of gravity
remains below the centre of gravity

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Hydraulics and Fluid Mechanics in ME
The flow in which each liquid particle has a definite path and their paths do not cross each other is called

one dimensional flow
turbulent flow
uniform flow
streamline flow

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