Steady flow occurs when____________________?

Related Mcqs:

1. Uniform flow occurs when____________________?

   A. the flow is steady
   B. the flow is streamline
   C. size and shape of the cross section in a particular length remain constant
   D. size and cross section change uniform¬ly along length
   E. flow occurs at constant fate

2. In the case of steady flow of a fluid, the acceleration of any fluid particle is__________________?

   A. constant
   B. variable
   C. zero
   D. zero under limiting conditions
   E. never zero

3. True one-dimensional flow occurs when___________________?

   A. the direction and magnitude of the veiocity at all points are identical
   B. the velocity of successive fluid par-ticles, at any point, is the same at suc-cessive periods of time
   C. the magnitude and direction of the velocity do not change from point to point in the fluid
   D. the fluid particles move in plane or parallel planes and the streamline pat-terns are identical in each plane
   E. velocity, depth, pressure etc. change from point to point in the fluid flow

4. Non uniform flow occurs when ____________________?

   A. the direction and magnitude of the velocity at all points are identical
   B. the velocity of successive fluid par-ticles, at any point, is the same at suc-cessive periods of time
   C. the magnitude aricf direction of the velocity do not change from point to point in the fluid
   D. the fluid particles move in plane or parallel planes and the streamline pat-terns are identical in each plane
   E. velocity, depth, pressure, etc. change from point to point in the fluid flow

5. Uniform flow occurs when___________________?

   A. the direction and magnitude of the velocity at all points are identical
   B. the velocity of successive fluid pai-ticles, at any point, is the same at suc¬cessive periods of time
   C. the magnitude and direction of the velocity do not change from point to point in the fluid
   D. the fluid particles move in plane or parallel planes and the streamline pat-terns are identical in each plsr.e
   E. velocity, depth, pressure, etc. change from point to point in the fluid flow

6. For pipes, turbulent flow occurs when Reynolds number is_________________?

   A. less than 2000
   B. between 2000 and 4000
   C. more than 4000
   D. less than 4000
   E. none of the above

7. Two dimensional flow occurs when___________________?

   A. the direction and magnitude of the velocity at all points are identical
   B. the velocity of successive fluid par-ticles, at any point, is the same at suc-cessive periods of time
   C. the magnitude and direction of the velocity do not change from point to point in the fluid
   D. the fluid particles move in plane or parallel planes and the streamline pat-terns are identical in each plane
   E. velocity, depth, pressure, etc. change from point to point in the fluid flow

8. For pipes, laminar flow occurs when Roynolds number is__________________?

   A. less than 2000
   B. between 2000 and 4000
   C. more than 4000
   D. less than 4000
   E. none of the above

9. According to Bernoulli’s equation for steady ideal fluid flow_______________?

   A. principle of conservation of mass holds
   B. velocity and pressure are inversely proportional
   C. total energy is constant throughout
   D. the energy is constant along a stream-line but may vary across streamlines
   E. none of the above

10. Normal depth in open channel flow is the depth of flow corresponding to_______________?

    A. steady flow
    B. unsteady flow
    C. laminar flow
    D. uniform flow
    E. critical flow