Category: Hydraulics and Fluid Mechanics

A. The center of buoyancy is located at the center of gravity of the displaced liquid
B. For stability of a submerged body, the center of gravity of body must lie directly below the center of buoyancy
C. If e.g. and center of buoyancy coincide, the submerged body must lie at neutral equilibrium for all positions
D. For stability of floating cylinders or spheres, the e.g. of body must lie below the center of buoyancy
E. All floating bodies are stable

A. supersonics, as with projectile and jet propulsion
B. full immersion or completely enclosed flow, as with pipes, aircraft wings, nozzles etc.
C. simultaneous motion through two fluids where there is a surface of dis-continuity, gravity forces, and wave making effect, as with ship’s hulls
D. all of the above
E. none of the above

A. any weight, floating or immersed in a liquid, is acted upon by a buoyant force
B. Buoyant force is equal to the weight of the liquid displaced
C. The point through which buoyant force acts, is called the center of buoyancy
D. Center of buoyancy is located above the center of gravity of the displaced liquid v
E. Relative density of liquids can be determined by means of the depth of flotation of hydrometer

A. steady flow
B. turbulent flow
C. laminar flow
D. non-uniform flow
E. all of the above

A. remains same
B. increases
C. decreases
D. shows erratic behaviour
E. none of the above.

A. at the inlet
B. at the outlet
C. at the summit
D. ay nay point between inlet and outlet
E. none of the above

A. 0.83
B. 0.6
C. 0.4
D. 0.3
E. none of the above

A. 0°C
B. 0°K
C. 4°C
D. 100°C
E. 20°C.

A. force of adhesion
B. force of cohesion
C. force of friction
D. force of diffusion
E. none of die above