The two important forces for a floating body are__________________?

Related Mcqs:

1. The fluid forces considered in the Navier Stokes equation are__________________?

   A. gravity, pressure and viscous
   B. gravity, pressure and turbulent
   C. pressure, viscous and turbulent
   D. gravity, viscous and turbulent
   E. none of the above

2. The conditions for the stable equilibrium of a floating body are___________________?

   A. the meta-center should lie above the center of gravity
   B. the center of buoyancy and the center of gravity must lie on the same vertical line
   C. a righting couple should be formed
   D. all the above are correct
   E. none of the above is correct

3. When a body floating in a liquid, is displaced slightly, it oscillates about _________________?

   A. e.g. of body
   B. center of pressure
   C. center of buoyancy
   D. metacentre
   E. liquid surface

4. For a floating body to be in equilibrium_____________________?

   A. meta centre should be above e.g.
   B. centre of buoyancy and e.g. must lie on same vertical plane
   C. a righting couple should be formed
   D. all of the above
   E. none of the above

5. The time oscillation of a floating body with increase in metacentric height will be_________________?

   A. same
   B. higher
   C. lower
   D. lower/higher depending on weight of body
   E. unpredictable

6. For a floating body to be in stable equilibrium, its metacentre should be___________________?

   A. below the center of gravity
   B. below the center of buoyancy
   C. above the center of buoyancy
   D. between e.g. and center of pressure
   E. above the center of gravity

7. For a body floating in a liquid the normal pressure exerted by the liquid acts at ____________________?

   A. bottom surface of the body
   B. e.g. of the body
   C. metacentre
   D. all points on the surface of the body
   E. all of the above

8. A liquid would wet the solid, if adhesion forces as compared to cohesion forces are________________?

   A. less
   B. more
   C. equal
   D. less at low temperature and more at high temperature
   E. there is no such criterion

9. The units of dynamic or absolute viscosity are__________________?

   A. metres2 per sec
   B. kg sec/meter
   C. newton-sec per meter
   D. newton-sec2 per meter
   E. none of the above

10. A metal with specific gravity of o floating in a fluid of same specific gravity a will____________________?

    A. sink to bottom
    B. float over fluid
    C. partly immersed
    D. be fully immersed with top surface at fluid surface
    E. none of the above