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Hydraulics and Fluid Mechanics in ME

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

Sixteen times
Eight times
Double
Four times

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

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

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Hydraulics and Fluid Mechanics in ME
One cubic metre of water weighs

250 liters
100 liters
1000 liters
500 liters

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Hydraulics and Fluid Mechanics in ME
A Pelton wheel is

Inward flow reaction turbine
Outward flow impulse turbine
Inward flow impulse turbine
Tangential flow impulse turbine

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Hydraulics and Fluid Mechanics in ME
The value of mass density in kgsecVm4 for water at 0°C is

1000
100
1
101.9

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Hydraulics and Fluid Mechanics in ME
The resultant upward pressure of the fluid on an immersed body due to its tendency to uplift the sub-merged body is called

buoyancy
metacentre
upthrust
reaction

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