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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
Ratio of inertia force to surface Jension is known as

Weber’s number
Froude number
Mach number
Reynold’s number

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Hydraulics and Fluid Mechanics in ME
Which of the following pump is preferred for flood control and irrigation applications?

Reciprocating pump
Centrifugal pump
Axial flow pump
Mixed flow pump

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Hydraulics and Fluid Mechanics in ME
A hydraulic accumulator normally consists of

Two cylinders, two rams and a storage device
Two coaxial rams and two cylinders
A cylinder, a piston, storage tank and control valve
A cylinder and a ram

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Hydraulics and Fluid Mechanics in ME
The point in the immersed body through which the resultant pressure of the liquid may be taken to act is known as

center of buoyancy
center of pressure
center of gravity
metacentre

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Hydraulics and Fluid Mechanics in ME
The time oscillation of a floating body with increase in meatcentric height will be

Lower
Same
Higher
Lower/higher depending on weight of body

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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 contracted to diameter (d2) at B which is constant for the length BC. The loss of head due to sudden contraction, assuming coefficient of contraction as 0.62, is

v₂²/2g
v₁²/2g
0.375 v₂²/2g
0.5 v₁²/2g

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