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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
Rain drops are spherical because of

air resistance
viscosity
atmospheric pressure
surface tension forces

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Hydraulics and Fluid Mechanics in ME
The imaginary line drawn in the fluid in such a way that the tangent to any point gives the direction of motion at that point, is known as

Potential line
Stream line
Steak line
Path line

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Hydraulics and Fluid Mechanics in ME
The unit power developed by a turbine is (where P = Power developed by the turbine under a head of water (H).

P/ H²
P/ H
P/ √H
P/ H3/2

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Hydraulics and Fluid Mechanics in ME
The flow rate in gear pump

Increases with increase in pressure
More or less remains constant with increase in pressure
Decreases with increase in pressure
Unpredictable

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Hydraulics and Fluid Mechanics in ME
The mercury does not wet the glass. This is due to the property of the liquid known as

Adhesion
Viscosity
Cohesion
Surface tension

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

Weber's number
Froude's number
Mach number
Reynold's number

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