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Hydraulics & Fluid Mechanics

Hydraulics & Fluid Mechanics
The discharge over a broad crested weir is maximum when the depth of flow is (where H is the available head)

2 H/3
2 H/5
H/2
H/3

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Hydraulics & Fluid Mechanics
Two pipe systems are said to be equivalent when

friction factor and length are same in two systems
length and diameter are same in two systems
head loss and discharge are same in two systems
length of pipe and discharge are same in two systems

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Hydraulics & Fluid Mechanics
To avoid vaporisation in the pipe line, the pipe line over the ridge is laid such that it is not more than

6.4 m above the hydraulic gradient
10.0 m above the hydraulic gradient
2.4 m above the hydraulic gradient
5.0 above the hydraulic gradient

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Hydraulics & Fluid Mechanics
THE THEORETICAL VALUE OF COEFFICIENT OF CONTRACTION OF A SHARP EDGED ORIFICE IS

1.01
0.611
0.86
0.95

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Hydraulics & Fluid Mechanics
Which of the following is demensionless

specific volume
specific weight
specific speed
specific gravity

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Hydraulics & Fluid Mechanics
The Prartdtl mixing length is

maximum at the pipe wall
zero at the pipe wall
independent of shear stress
None of these

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