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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The product of mass and acceleration of flowing liquid is called

Gravity force
Viscous force
Pressure force
Inertia force

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Hydraulics and Fluid Mechanics in ME
For centrifugal pump impeller, the maximum value of the vane exit angle is

20° to 25°
15° to 20°
25° to 30°
10° to 15°

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Hydraulics and Fluid Mechanics in ME
An impulse turbine is used for

Medium head of water
High discharge
High head of water
Low head of water

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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

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

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Hydraulics and Fluid Mechanics in ME
A hemispherical tank of radius (R) has an orifice of cross-sectional area (a) at its bottom and is full of liquid. The time required to empty the tank completely is

14π R5/2/15Cd × a √(2g)
14π R7/2/15Cd × a √(2g)
14π R3/2/15Cd × a √(2g)
14π R1/2/15Cd × a √(2g)

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

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

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