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

Stagnation pressure
Lift
Bulk modulus
Drag

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Hydraulics and Fluid Mechanics in ME
Coefficient of velocity is defined as the ratio of

Area of jet at vena contracta to the area of orifice
Actual velocity of jet at vena contracta to the theoretical velocity
None of these
Actual discharge through an orifice to the theoretical discharge

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Hydraulics and Fluid Mechanics in ME
The flow in a pipe or channel is said to be non-uniform when

The liquid particles at all sections have the same velocities
The quantity of liquid flowing per second is constant
Each liquid particle has a definite path
The liquid particles at different sections have different velocities

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