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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
If w is the specific weight of liquid and k the depth of any point from the surface, then pressure intensity at that point will be

wh
w/h
h/w
h

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Hydraulics and Fluid Mechanics in ME
A double overhung Pelton wheel has

Four runners
Two jets
Four jets
Two runners

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Hydraulics and Fluid Mechanics in ME
The maximum number of jets generally employed in impulse turbine without jet interference is

6
4
12
8

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Hydraulics and Fluid Mechanics in ME
The boundary layer thickness at a distance of l m from the leading edge of a flat plate, kept at zero angle of incidence to the flow direction, is O.l cm. The velocity outside the boundary layer is 25 ml sec. The boundary layer thickness at a distance of 4 m is (Assume that boundary layer is entirely laminar)

0.10 cm
0.05 cm
0.40 cm
0.20 cm

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Hydraulics and Fluid Mechanics in ME
The pressure at a point in a fluid will not be same in all the directions when the fluid is

viscous and moving.
viscous
inviscous and moving
moving

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Hydraulics and Fluid Mechanics in ME
The pressure at a point 4 m below the free surface of water is

29.24 kPa
49.24 kPa
19.24 kPa
39.24 kPa

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