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

Related Mcqs:

1. 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

2. The point in the immersed body through which the resultant pressure of the liquid may be taken to act is known as__________________?

   A. center of gravity
   B. center of buoyancy
   C. center of pressure
   D. metacentre

3. With the same cross-sectional area and immersed in same turbulent flow, the largest total drag will be on__________________?

   A. a circular disc of plate held normal to flow
   B. a sphere
   C. a cylinder
   D. a streamlined body

4. 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

5. 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

6. A rectangular block 2 m long, 1 m wide and 1 m deep floats in water, the depth of immersion being 0.5 m. If water weighs 10 kN/m3, then the weight of the block is________________?

   A. 5kN
   B. lOkN
   C. 15 kN
   D. 20 kN

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

   A. constant over the cross section
   B. parabolic distribution across the section
   C. zero at the mid plane and varies linearly with distance from mid plane
   D. zero at plates and increases linearly to midpoint

8. 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

9. 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

10. An ideal fluid is_______________?

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