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Hydraulics & Fluid Mechanics

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)

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

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

one dimensional flow
uniform flow
steady flow
turbulent flow

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Hydraulics & Fluid Mechanics
According to the principle of buoyancy a body totally or partially immersed in a fluid will be lifted up by a force equal to

weight of the fluid displaced by the body
less than the weight of the body
the weight of the body
more than the weight of the body

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Hydraulics & Fluid Mechanics
The horse power transmitted through a pipe is maximum when the ratio of loss of head due to friction and total head supplied is

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

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

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

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Hydraulics & Fluid Mechanics
In a Sutro weir, the discharge is proportional to (where H is head)

H
H5/2
H1/2
H3/2

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