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Hydraulics and Fluid Mechanics in ME

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
Eight times
Four times
Double

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Hydraulics and Fluid Mechanics in ME
The hydraulic gradient line lies over the centre line of the pipe by an amount equal to the

Pressure head + velocity head
Velocity head
Pressure head
Pressure head - velocity head

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Hydraulics and Fluid Mechanics in ME
For very great pressures, viscosity of moss gases and liquids

remains same
increases
decreases
shows erratic behaviour

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Hydraulics and Fluid Mechanics in ME
Reynold's number is the ratio of inertia force to

Elastic force
Gravity force
Viscous force
Pressure force

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Hydraulics and Fluid Mechanics in ME
The Newton's law of resistance is based on the assumption that the

Fluid particles do not exert any influence on one another
Planes of the body are completely smooth
Space around the body is completely filled with the fluid
All of these

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Hydraulics and Fluid Mechanics in ME
The stress-strain relation of the Newtonian fluid is

Hyperbolic
Linear
Inverse type
Parabolic

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