Related Questions

Fanning friction factor for laminar flow of fluid in a circular pipe is
A Not a function of the roughness of pipe wall
B Inversely proportional to Reynolds number
C Both A and B
D Neither A nor B
According to Reynolds analogy, Stanton number is equal to (where, f = Fanning friction factor)
A 2f
B f
C $$\frac{{\text{f}}}{2}$$
D $$\frac{{\text{f}}}{4}$$
In which type of fluid flow, the velocity of flow of fluid changes from point to point in the fluid at any instant?
A Rotational
B Unsteady
C Turbulent
D Non-uniform
Friction factor for fluid flow in pipe does not depend upon the
A Pipe length
B Pipe roughness
C Fluid density & viscosity
D Mass flow rate of fluid
The open "Sigrees" or coal stoves often require fanning to sustain burning because of
A Tendency of carbon dioxide to form a layer along with dust smoke
B Lack of oxygen in the surroundings of sigrees
C Accumulation of smoke and dust over the sigrees
D Interrupted release of moisture from the material
Which of the following equations applies to the fluid flow through a packed bed for very large Reynolds number?
A Fanning equation
B Blake-Pllummer equation
C Hagen-Poiseulle equation
D Kozney-Karman equation
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
When the load on the engine increases, it becomes necessary to increase the supply of working fluid and when the load decreases, less working fluid is required. The supply of the working fluid to the engine is controlled by a
A D-slide valve
B governor
C Meyer’s expansion valve
D flywheel
If cohesion between molecules of a fluid is greater than adhesion between fluid and glass, then the free level of fluid in a dipped glass tube will be
A Higher than the surface of liquid
B The same as the surface of liquid
C Lower than the surface of liquid
D Unpredictable
The fluid velocity varies as the square of the cylindrical pipe diameter, in case of steady state laminar flow at constant pressure drop, for __________ fluid.
A Newtonion
B Dilatant
C Pseudo-plastic
D Non-Newtonion

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