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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The normal stress in a fluid will be constant in all directions at a point only if

It has uniform viscosity
It has zero viscosity
It is at rest
It is incompressible

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

100
101.9
1000
1

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Hydraulics and Fluid Mechanics in ME
In a Francis turbine runner, the numbers of blades are generally between

2 to 4
4 to 8
8 to 16
16 to 24

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Hydraulics and Fluid Mechanics in ME
The width of the bucket for a Pelton wheel is generally ________ the diameter of jet.

Five times
Four times
Three times
Double

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Hydraulics and Fluid Mechanics in ME
A Pelton wheel develops 1750 kW under a head of 100 meters while running at 200 r.p.m. and discharging 2500 liters of water per second. The unit discharge of wheel is

1.5 m3/s
2.5 m3/s
0.5 m3/s
0.25 m3/s

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Hydraulics and Fluid Mechanics in ME
The vapour pressure over the concave surface is

greater than the vapour pressure over the plane surface
zero
less man the vapour pressure over the plane surface
equal to the vapour pressure over the plane surface

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