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Hydraulics & Fluid Mechanics

Hydraulics & Fluid Mechanics
Ay between two stream lines represents

head
velocity
pressure
discharge

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Hydraulics & Fluid Mechanics
In which of the following the friction drag is generally larger than pressure drag?

a sphere
a circular disc or plate held normal to flow
a cylinder
an airfoil

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Hydraulics & Fluid Mechanics
The distance from pipe boundary, at which the turbulent shear stress is one-third die wall shear stress, is (where R is the radius of pipe)

3/4 R
1/2 R
1/3 R
2/3 R

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Hydraulics & Fluid Mechanics
Normal depth in open channel flow is the depth of flow corresponding to

Steady flow
uniform flow
laminar flow
unsteady flow

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Hydraulics & Fluid Mechanics
Surface energy per unit area of a surface is numerically equal to

atmospheric pressure
force of adhesion
force of cohesion
surface tension

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Hydraulics & Fluid Mechanics
The flow which neglects changes in a transverse direction is known as

steady flow
uniform flow
turbulent flow
one dimensional flow

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