Civil Engineering :: Hydraulics and Fluid Mechanics - Civil Engineering
- If the atmospheric pressure on the surface of an oil tank (sp. gr. 0.8) is 0.2 kg/cm”, the pressure at a depth of 50 m below the oil surface will be
- The pressure in the air space above an oil (sp. gr. 0.8) surface in a tank is 0.1 kg/cm”. The pressure at 2.5 m below the oil surface will be
- If cohesion between molecules of a fluid is greater than adhesion between fluid and glass, then the free level of fluid in a dipped glass tube will be
- The hydraulic grade line is
- During the opening of a valve in a pipe line, the flow is
- A balloon lifting in air follows the following principle
- Choose the wrong statement
- In a forced vortex motion, the velocity of flow is
- When the flow parameters at any given instant remain same at every point, then flow is said to be
- The atmospheric pressure with rise in altitude decreases
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A.
The horizontal component of the hydro-static force on any surface is equal to the normal force on the vertical projection of the surface |
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B.
The horizontal component acts through the center of pressure for the vertical projection |
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C.
The vertical component of the hydrostatic force on any surface is equal to the weight of the volume of the liquid above the area |
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D.
he vertical component passes through the center of pressure of the volume |
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A.
directly proportional to its radial distance from axis of rotation |
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B.
inversely proportional to its radial distance from the axis of rotation |
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C.
inversely proportional to the square of its radial distance from the axis of rotation |
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D.
directly proportional to the square of its radial distance from the axis of rotation |