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For the following questions answer them individually
The velocity distribution in the turbulent boundary layer follows
straight line law
parabolic law
hyperbolic law
logarithmic law or Power law
When a liquid rotates at constant angular velocity about a vertical axis as a right body, the pressure
varies as the square of the radial distance
decreases as the square of the radial distance
increases linearly as the radial distance
varies inversely as the elevation along any vertical line
The magnitude of water hammer depends on
length of pipe
elastic properties of pipe material
rate of stoppage of flow
All options are correct
Power transmitted through a pipe is maximum when the loss of head due to friction is
one-half of the total head supplied
one-third of the total head supplied
one-fourth of the total head supplied
equal to the total head supplied
To replace a pipe of diameter D by n parallel pipes of diameter d, the formula used is
d = D/n
d = D/n1/2
d = D/n3/2
d = D/n2/5
The total frictional resistance to fluid flow is independent of
density of fluid
velocity
pressure
surface roughness
Which of the following represents unsteady non-uniform flow
flow through an expanding tube at an increasing rate
flow through an expanding tube at constant rate
flow through a long pipe at decreasing rate
flow through a long pipe at constant rate
Discharge through a totally submerged orifice is directly proportional to
the difference in elevation of water surface
the square root of the difference in elevation of water surface
the square root of the area of the opening
reciprocal of the area of the opening
In turbulent flow
the shear stresses are generally larger than in a similar laminar flow
fluid particles move in an orderly manner
momentum transfer is on a molecular scale only
cohesion is more effective than momentum transfer in causing shear stress
The shear stress in a fluid flowing in a round pipe
is constant over the cross-section
is zero at the wall and increases linearly to the center
is zero at the center and varies linearly with radius
varies parabolically across the section
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