The shear stress distribution for a fluid flowing in between the parallel plates, both at rest, is_______________?

Related Mcqs:

1. The distance from pipe boundary, at which the turbulent shear stress is one-third die wall shear stress, is_______________?

   A. 1/3 R
   B. 1/2 R
   C. 2/3 R
   D. 3/4R

   where R is the radius of pipe

2. In steady flow of a fluid, the total accele ration of any fluid particle______________?

   A. can be zero
   B. is never zero
   C. is always zero
   D. is independent of coordinates

3. If the dynamic viscosity of a fluid is 0.5 poise and specific gravity is 0.5, then the kinematic viscosity of that fluid in stokes is__________________?

   A. 0.25
   B. 0.50
   C. 1.0
   D. none of the above

4. An ideal fluid is_______________?

   A. one which obeys Newton’s law of viscosity
   B. frictionless and incompressible
   C. very viscous
   D. frictionless and compressible

5. When an ideal fluid flows past a sphere________________?

   A. highest intensity of pressure occurs around the circumference at right angles to flow
   B. lowest pressure intensity occurs at front stagnation point
   C. lowest pressure intensity occurs at rear stagnation point
   D. total drag is zero

6. A fluid of kinematic viscosity 0.4 cm2/sec flows through a 8 cm diameter pipe. The maximum velocity for laminar flow will be__________________?

   A. less than 1 m/sec
   B. 1 m/sec
   C. 1.5 m/sec
   D. 2 m/sec

7. If the weight of a body immersed in a fluid exceeds the buoyant force, then the body will________________?

   A. rise until its weight equals the buoyant force
   B. tend to move downward and it may finally sink
   C. float
   D. none of the above

8. The position of center of pressure on a plane surface immersed vertically in a static mass of fluid is______________?

   A. at the centroid of the submerged area
   B. always above the centroid of the area
   C. always below the centroid of the area
   D. none of the above

9. The velocity distribution for laminar flow through a circular tube__________________?

   A. is constant over the cross-section
   B. varies linearly from zero at walls to maximum at centre
   C. varies parabolically with maximum at the centre
   D. none of the above

10. When the velocity distribution is uniform over the cross-section, the correction factor for momentum is__________________?

    A. 0
    B. 1
    C. 4/3
    D. 2