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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The most economical section of a rectangular channel is one which has hydraulic mean depth or hydraulic radius equal to

Twice the depth
Half the depth
Half the breadth
Twice the breadth

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Hydraulics and Fluid Mechanics in ME
The process of diffusion of one liquid into the other through a semi-permeable membrane is called

osmosis
cohesion
surface tension
viscosity

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Hydraulics and Fluid Mechanics in ME
A vertical wall is subjected to a pressure due to one kind of liquid, on one of its sides. The total pressure on the wall acts at a distance __________ from the liquid surface.

2H/3
H/3
3H/4
H/2

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Hydraulics and Fluid Mechanics in ME
One poise is equal to

1 N-s/m2
0.1 N-s/m2
100 N-s/m2
10 N-s/m2

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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

Four times
Sixteen times
Double
Eight times

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Hydraulics and Fluid Mechanics in ME
A fluid in equilibrium can't sustain

Compressive stress
Tensile stress
Bending stress
Shear stress

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