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Hydraulics and Fluid Mechanics in ME

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

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

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Hydraulics and Fluid Mechanics in ME
In a footstep bearing, if the radius of the shaft is doubled, then the torque required to overcome the viscous resistance will be

Double
Four times
Sixteen times
Eight times

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Hydraulics and Fluid Mechanics in ME
Any change in load is adjusted by adjusting following parameter on turbine

Blade velocity
Absolute velocity
Flow
Net head

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Hydraulics and Fluid Mechanics in ME
Center of pressure compared to e.g. is

Above it
Below it
Above or below depending on area of body
At same point

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Hydraulics and Fluid Mechanics in ME
The undershot water wheels are those in which

The wheel runs entirely by the impulse of water
The wheel runs entirely by the weight of water
None of these
The wheel runs partly by the weight of water and partly by the impulse of water

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Hydraulics and Fluid Mechanics in ME
The maximum number of jets, generally, employed in an impulse turbine without jet interference are

Eight
Six
Four
Two

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