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Hydraulics & Fluid Mechanics

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

unsteady flow
Steady flow
laminar flow
uniform flow

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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)

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

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Hydraulics & Fluid Mechanics
Uniform flow occurs when

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

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Hydraulics & Fluid Mechanics
If 850 kg liquid occupies volume of one cubic meter, men 0.85 represents its

specific density
specific gravity
specific mass
specific weight

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

turbulent flow
uniform flow
steady flow
one dimensional flow

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Hydraulics & Fluid Mechanics
A bucket of water is hanging from a spring balance. An iron piece is suspended into water without touching sides of bucket from another support. The spring balance reading will

increase
increase/decrease depending on depth of immersion
remain same
decrease

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