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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The variation in the volume of a liquid with the variation of pressure is called its

Capillarity
Surface tension
Compressibility
Viscosity

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Hydraulics and Fluid Mechanics in ME
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

Lower than the surface of liquid
Unpredictable
The same as the surface of liquid
Higher than the surface of liquid

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Hydraulics and Fluid Mechanics in ME
Whenever a plate is held immersed at some angle with the direction of flow of the liquid, it is subjected to some pressure. The component of this pressure, in the direction of flow of the liquid, is known as

Bulk modulus
Lift
Stagnation pressure
Drag

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Hydraulics and Fluid Mechanics in ME
If the weight of a body immersed in a fluid exceeds the buoyant force, then the body will

tend to move downward and it may finally sink
None of these
rise until its weight equals the buoyant force
float

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Hydraulics and Fluid Mechanics in ME
The length AB of a pipe ABC in which the liquid is flowing has diameter (d1) and is suddenly enlarged to diameter (d2) at B which is constant for the length BC. The loss of head due to sudden enlargement is

(v₁ - v₂)²/g
(v₁ - v₂)²/2g
(v₁² - v₂²)/g
(v₁² - v₂²)/2g

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Hydraulics and Fluid Mechanics in ME
The ratio of the inertia force to the viscous force is called

Weber's number
Froude's number
Reynold's number
Euler's number

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