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Hydraulics & Fluid Mechanics

Hydraulics & Fluid Mechanics
The peoperty by virtue of which a liquid opposes relative motion between its different layers is called

viscosity
co-efficient of viscosity
osmosis
surface tension

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Hydraulics & Fluid Mechanics
The total pressure force on a plane area is equal to the area multiplied by the intensity of pressure at the centriod, if

the area is inclined
the area is horizontal
All of these
the area is vertical

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

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

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Hydraulics & Fluid Mechanics
Uniform flow occurs when

the flow is streamline
the flow is steady
size and cross section change uniformly along length
size and shape of the cross section in a particular length remain constant

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

1.01
0.95
0.86
0.611

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Hydraulics & Fluid Mechanics
The units of viscosity are

kg sec/metre
newton-sec/metre
newton-sec/metre2
metre2/se

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