Mass velocity in case of steady flow and through a constant cross-section conduit is independent of the _________________?

Related Mcqs:

1. The fluid velocity varies as the square root of the cylindrical pipe diameter in case of steady state laminar flow at constant pressure drop of _____________ fluid?

   A. Dilatent
   B. Pseudo-plastic
   C. Bingham plastic
   D. Newtonian

2. 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. Newtonian
   B. Dilatant
   C. Pseudo-plastic

   D. Non-Newtonian

3. The fluid velocity varies as the cube of the cylindrical pipe diameter in case of steady state laminar flow at constant pressure drop for ____________ fluid?

   A. Newtonian
   B. Pseudo-plastic
   C. Dilatent
   D. Bingham plastic

4. The velocity profile for turbulent flow through a closed conduit is_______________?

   A. Logarithmic
   B. Parabolic
   C. Hyperbolic
   D. Linear

5. A pipe has a porous section of length L as shown in the figure. Velocity at the start of this section of V0. If fluid leaks into the pipe through the porous section at a volumetric rate per unit area q(x/L)2, what will be axial velocity in the pipe at any „x‟? Assume incompressible one dimensional flow i.e., no gradients in the radial direction ?

   A. VX = V0 + q (x3/L2D)
   B. VX = V0 + ⅓q (x3/L2)
   C. VX = V0 + 2q (x2/LD)
   D. VX = V0 + (4/3) q (x3/L2D)

6. Bernoulli’s equation for fluid flow is derived following certain assumptions. Out of the assumptions listed below, which set of assumptions is used in derivation of Bernoulli’s equation? A. Fluid flow is frictionless & irrotational. B. Fluid flow is steady. C. Fluid flow is uniform & turbulent. D. Fluid is compressible. E. Fluid is incompressible ?

   A. A, C, D
   B. B, D, E
   C. A, B, E
   D. A, D, E

7. Where does the maximum stress occur in case of laminar flow of incompressible fluid in a closed conduit of diameter ‘d’ ?

   A. At the centre
   B. At d/4 from the wall
   C. At the wall
   D. At d/8 from the wall

8. What is the ratio of the velocity at the axis of the pipe to the mean velocity of flow in case of pipe flow under viscous condition ?

   A. 0.5
   B. 0.67
   C. 1
   D. 2

9. Mass velocity is independent of temperature & pressure, when the flow is______________________?

   A. Unsteady through unchanged cross-section
   B. Steady through changing cross-section
   C. Steady and the cross-section is unchanged
   D. Unsteady and the cross-section is changed

10. In case of a pipe of constant cross-sectional area, the maximum fluid velocity obtainable is___________________?

    A. The velocity of sound
    B. Dependent on its cross-sectional area
    C. Dependent on fluid viscosity
    D. Dependent on fluid density