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This mock test of Test: Hydrostatic Forces on Surfaces for Mechanical Engineering helps you for every Mechanical Engineering entrance exam.
This contains 10 Multiple Choice Questions for Mechanical Engineering Test: Hydrostatic Forces on Surfaces (mcq) to study with solutions a complete question bank.
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QUESTION: 1

For an inclined plane submerged in a liquid, the centre of pressure on one side of the plane will be

Solution:

QUESTION: 2

A rectangular water tank, full to the brim, has its length, breadth and height in the ratio 2 : 1 :2 .The ratio of hydrostatic forces on the bottom to that on any larger vertical surface of the tank is

Solution:

QUESTION: 3

A plane area in the form of a right angle triangle of height h base b is immersed vertically in water with its vertex at the water surface. The coordinate of the location of center of pressure IS

Solution:

Taking moments of force on the element about O Y and integrating:

so, the coordinate of center of pressure is

QUESTION: 4

A circular disc of diameter D is immersed vertically in a liquid of density p. The top most point of the disc just touches the liquid surface . What is depth of center of pressure ?

Solution:

QUESTION: 5

A circular annular area of inner and outer diameter, D and 2D respectively is immersed vertically in water with the center of the area at 3D below the water surface . The location of the center of pressure is

Solution:

QUESTION: 6

A rectangular gate is to open just as the water level reaches a height of 4 m from the bottom of the gate as shown in figure .

What s the location y of the pivot ? ( Take width of gate as 1 m)

Solution:

The gate will open just when the center of pressure coincides with the location of the pivot

QUESTION: 7

A hemispherical bulge of diameter 1.5 m is provided in the bottom of a tank. If the depth of water above the horizontal floor of the tank is 5.0 m, what is the magnitude and direction of the resultant force on the hemisphere?

Solution:

Net horizontal force = 0

F_{v} = weight of fluid above the hemisphere

QUESTION: 8

The total pressure on a horizontally immersed surface is

Where,

w = specific weight of the liquid

A = area of the immersed surface

=depth of the center of gravity of the immersed surface from the liquid surface

Solution:

QUESTION: 9

Point of application of a horizontal force on curved surface submerged in liquid is

Solution:

where is distance of centre of gravity from free surface and I_{G} area moment of inertia

QUESTION: 10

The depth of centre of pressure for a rectangular lamina immersed vertically in water up to height h is given by

Solution:

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