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Hydraulics and Fluid Mechanics in ME

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

Euler's number
Reynold's number
Froude's number
Weber's number

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

Sixteen times
Four times
Double
Eight times

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Hydraulics and Fluid Mechanics in ME
Rotameter is a device used to measure

absolute pressure
rotation
flow
velocity of fluid

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Hydraulics and Fluid Mechanics in ME
A nozzle placed at the end of a water pipe line discharges water at a

High velocity
High pressure
Low velocity
Low pressure

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Hydraulics and Fluid Mechanics in ME
The maximum hydraulic efficiency of an impulse turbine is (where φ = Angle of blade tip at outlet)

(1 + sin φ)/2
(1 - sin φ)/2
(1 + cos φ)/2
(1 - cos φ)/2

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

100 liters
1000 liters
500 liters
250 liters

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