The total pressure force on a plane area is equal to the area multiplied by the

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Question
The total pressure force on a plane area is equal to the area multiplied by the intensity of pressure at its centroid, if
Options
A. area is horizontal
B. area is vertical
C. area is inclined
D. all the above.

Correct Answer

all the above.

Hydraulics problems

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1. The moment of inertia of a floating body along its longitudinal axis and the volume of water displaced by it are I and V respectively. The height of the metacentre above centre of buoyancy of the body, is
Options
A.
B.
C.
D.
E.

2. A cylinder 3 m in diameter and 4 m long retains water one side as shown in the below figure. If the weight of the cylinder is 2000 kgf, the horizontal reaction at B is
Options
A. 10,000 kgf
B. 15,000 kgf
C. 20,000 kgf
D. 18,000 kgf.

7. A tank 4m x 3m x 2m containing an oil of specific gravity 0.83 is moved with an acceleration g/2 m sec². The ratio of the pressures at its bottom when it is moving vertically up and down, is
Options
A. 2
B. 3
C. 1/2
D. 1/3

9. The thickness of a sharp crested weir is kept less than
Options
A. one-third of the height of water on the sill
B. one-half of the height of water on the sill
C. one-fourth of the height of water on the sill
D. two-third of the height of water on the sill
E. none of these.

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