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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The water pressure per metre length on a vertical masonry wall of dam is (where w = Specific weight of the liquid, and H = Height of the liquid)

wH2/2
wH2/4
wH
wH/2

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Hydraulics and Fluid Mechanics in ME
Euler's equation in the differential form for the motion of liquids is given by

dp/ρ - g.dz + v.dv = 0
dp/ρ + g.dz + v.dv = 0
ρ.dp + g.dz + v.dv = 0
ρ.dp - g.dz + v.dv = 0

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Hydraulics and Fluid Mechanics in ME
In an internal mouthpiece, if the jet after contraction does not touch the sides of the mouthpiece, then the mouthpiece is said to be

Running free
Partially running full
Partially running free
Running full

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Hydraulics and Fluid Mechanics in ME
A fluid of kinematic viscosity 0.4 cm²/sec flows through a 8 cm diameter pipe. The maximum velocity for laminar flow will be

1 m/sec
less than 1 m/sec
1.5 m/sec
2 m/sec

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Hydraulics and Fluid Mechanics in ME
At the center line of a pipe flowing under pressure where the velocity gradient is zero, the shear stress will be

Zero
Minimum
Maximum
Could be any value

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Hydraulics and Fluid Mechanics in ME
The discharge in an open channel corresponding to critical depth is

Minimum
None of these
Maximum
Zero

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