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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

h
w/h
h/w
wh

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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

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

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Hydraulics and Fluid Mechanics in ME
The horizontal component of buoyant force is

None of these
Negligible
Zero
Same as buoyant force

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Hydraulics and Fluid Mechanics in ME
In a footstep bearing, if the speed of the shaft is doubled, then the torque required to overcome the viscous resistance will be

Eight times
Sixteen times
Double
Four times

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Hydraulics and Fluid Mechanics in ME
Specific weight of water in S.I. units is equal to

9.81 xlO6 N/m3
10000 N/m3
9.81 xlO3 N/m3
1000 N/m3

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Hydraulics and Fluid Mechanics in ME
The viscosity of water at 20°C is

One poise
One stoke
One centistoke
One centipoise

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