Related Questions

Fanning friction factor equation applies to the __________ fluid flow.
A Non-isothermal condition of
B Compressible
C Both A and B
D Neither A nor B
For laminar flow of Newtonion fluid in a circular pipe, the velocity distribution is a function of the distance 'd' measured from the centre line of the pipe, and it follows a __________ relationship.
A Logarithmic
B Parabolic
C Hyperbolic
D Linear
The ratio of average fluid velocity to the maximum velocity in case of laminar flow of a Newtonion fluid in a circular pipe is
A 0.5
B 1
C 2
D 0.66
For laminar flow in a pipe of circular cross-section, the Darcy’s friction factor f is
A directly proportional to Reynolds number and independent of pipe wall roughness
B directly proportional to pipe wall roughness and independent of Reynolds number
C inversely proportional to Reynolds number and indpendent of pipe wall roughness
D inversely proportional to Reynolds number and directly proportional to pipe wall roughness
For the laminar flow of a fluid in a circular pipe of radius R, the Hagen-Poisseule equation predicts the volumetric flow rate to be proportional to
A R
B R2
C R4
D R0.5
A tank is filled by three pipes with uniform flow. The first two pipes operating simultaneously fill the tank in the same time during which the tank is filled by the third pipe alone. The second pipe fills the tank 5 hours faster than the first pipe and 4 hours slower than the third pipe. The time required by the first pipe is:
A 6 hours
B 10 hours
C 15 hours
D 30 hours
Transition from laminar flow to turbulent flow in fluid flow through a pipe does not depend upon the
A Length of the pipe
B Diameter of the pipe
C Density of the fluid
D Velocity of the fluid
The velocity profile exhibited by laminar flow of Newtonion fluids is such that the velocity distribution w.r.t. radius of the circular pipe is a/an __________ with the apex at the centre line of the pipe.
A Hyperbola
B Parabola
C Semi-circle
D Semi-ellipse
In case of laminar flow of fluid through a circular pipe, the
A Shear stress over the cross-section is proportional to the distance from the surface of the pipe
B Surface of velocity distribution is a paraboloid of revolution, whose volume equals half the volume of circumscribing cylinder
C Velocity profile varies hyperbolically and the shear stress remains constant over the cross-section
D Average flow occurs at a radial distance of 0.5 r from the centre of the pipe (r = pipe radius)
What is the ratio of total kinetic energy of fluid passing per second to the value obtained on the basis of average velocity (for laminar flow through a circular pipe)?
A 0.5
B 1
C 1.5
D 2

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