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Hydraulic And Fluid Machines QUESTIONS AND ANSWERS

Mechanical Engineering : Hydraulic And Fluid Machines QUESTIONS AND ANSWERS :: part6 : 16 to 20

Following Mechanical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :

16.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

9,000 kg

13,500 kg

1000 kg

27,000 kg

30,000 kg.

17.Choose the wrong statement

The horizontal component of the hydro-static force on any surface is equal to the normal force on the verti�cal projection of the surface

The horizontal component acts through the centre of pressure for the vertical projection

The vertical component of the hydros-tatic force on any surface is equal to the weight of the volume of the liquid above the area

he vertical component passes through the centre of pressure of the volume

Centre of pressure acts at a greater depth than centre of gravity.

18.The line of action of the buoyant force acts through the centroid of the

submerged body

volume of the floating body

volume of the fluid vertically above the body

displaced volume of the fluid

none of the above.

19.Choose the wrong statement

The centre of buoyancy is located at the centre of gravity of the displaced liquid

For stability of a submerged body, the centre of gravity of body must lie directly below the centre of buoyancy

If e.g. and centre of buoyancy coin�cide, the submerged body must lie at neutral equilibrium for all positions

For stability of floating cylinders or spheres, the e.g. of body must lie below the centre of buoyancy

All floating bodies are stable.

20.The df pth of the centre of pressure on a vertical rectangular gate m wide and 6 m high, when the water surface coincides with the top of the gate, is

2.4 m

3.0 m

4.0 m

"2.5 m

5.0 m.

More Hydraulic And Fluid Machines QUESTIONS AND ANSWERS available in next pages