Two dimensional stream function________________?

Related Mcqs:

1. A stream tube is that, which has ______________________ cross-section entirely bounded by stream lines?

   A. A circular
   B. Any convenient
   C. A small
   D. A large

2. Which of the following exemplifies a three dimensional fluid flow ?

   A. Fluid flow at the inlet to a nozzle
   B. Fluid flow between parallel plates
   C. Viscous fluid flow between converging plates
   D. None of these

3. One dimensional flow implies________________________?

   A. Flow in a straight line
   B. Steady uniform flow
   C. Unsteady uniform flow
   D. A flow which does not account for changes in transverse direction

4. For one dimensional flow of an incompressible fluid in unsteady state in x-direction, the continuity equation is given by_______________?

   A. ∂u/∂x = 0
   B. ∂(ρu)/∂x = 0
   C. (∂u/∂x) = – (∂ρ/∂t)
   D. ∂ρ/∂t = 0

5. One dimensional fluid flow implies the ________________________?

   A. Flow in straight lines only
   B. Uniform flow
   C. Steady uniform flow
   D. Flow in which transverse components are zero

6. 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)

7. The distribution of shear stress in a stream of fluid in a circular tube is_____________________?

   A. Linear with radius for turbulent flow only
   B. Linear with radius for laminar flow only
   C. Linear with radius for both laminar & turbulent flow
   D. Parabolic with radius for both laminar & turbulent flow

8. A stream line is___________________?

   A. Fixed in space in steady flow
   B. Always the path of particle
   C. Drawn normal to the velocity vector at every point
   D. A line connecting the mid points of flow cross-section

9. The Stoke’s stream function applies to the________________?

   A. Irrotational flow only
   B. Ideal/non i viscous fluids only
   C. Cases of axial symmetry
   D. None of these

10. With increase in the temperature, viscosity of a liquid____________________?

    A. Increases
    B. Decreases
    C. Remain constant
    D. May increase or decrease; depends on the liquid