Mechanical Engineering :: Hydraulics and Fluid Mechanics
- Choose the wrong statement
- Choose the wrong statement
- Choose the wrong statement
- Select the wrong statement
- Choose the wrong statement
- The unit power developed by a turbine is (where P = Power developed by the turbine under a head of water (H).
- In a broad-crested weir, the discharge is maximum if the head of water on the downstream side of weir is __________ the head of water on the upstream side of weir.
- In an internal mouthpiece, if the jet after contraction does not touch the sides of the mouthpiece, then the mouthpiece is said to be
- A piece weighing 3 kg in air was found to weigh 2.5 kg when submerged in water. Its specific gravity is
- An odd shaped body weighing 7.5 kg and occupying 0.01 m3 volume will be completely submerged in a fluid having specific gravity of
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A.
Viscosity of a fluid is that property which determines the amount of its resistance to a shearing force |
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B.
Viscosity is due primarily to interaction between fluid molecules |
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C.
Viscosity of liquids decreases with increase in temperature |
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D.
Viscosity of liquids is appreciably affected by change in pressure |
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A.
The horizontal component of the hydrostatic 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.
The vertical component passes through the center of pressure of the volume |
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A.
Any weight, floating or immersed in a liquid, is acted upon by a buoyant force |
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B.
Buoyant force is equal to the weight of the liquid displaced |
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C.
The point through which buoyant force acts, is called the center of buoyancy |
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D.
Center of buoyancy is located above the center of gravity of the displaced liquid |
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A.
The center of buoyancy is located at the center of gravity of the displaced liquid |
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B.
For stability of a submerged body, the center of gravity of body must lie directly below the center of buoyancy |
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C.
If C.G. and center of buoyancy coincide, the submerged body must lie at neutral equilibrium for all positions |
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D.
All floating bodies are stable |