Hydraulic and Fluid Machines - Interview Questions | Exam2Win

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16. According to the principle of buoyancy a body totally or partially immersed in a fluid will be lifted up by a force equal to

A. the weight of the body

B. more than the weight of the body

C. less than the weight of the body

D. weight of the fluid displaced by the body

E. weight of body plus the weight of the fluid displaced hy the body.

Explanation:

17. The centre of gravity of the volume of the liquid displaced by an immersed body is called

A. centre of gravity

B. centre of pressure

C. metacentre

D. centre of buoyancy

E. centroid.

Explanation:

18. For a floating body to be in stable equilibrium, its metacentre should be

A. below the centre of gravity

B. below the centre of buoyancy

C. above the centre of buoyancy

D. between e.g. and centre of pressure

E. above the centre of gravity.

Explanation:

19. 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.

Explanation:

20. A square surface 3 m x 3 m lies in a vertical line in water pipe its upper edge at vater surface. The hydrostatic force on square surface is

A. 9,000 kg

B. 13,500 kg

C. 1000 kg

D. 27,000 kg

E. 30,000 kg.

Explanation: