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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The width of the bucket for a Pelton wheel is generally ________ the diameter of jet.

Three times
Double
Five times
Four times

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Hydraulics and Fluid Mechanics in ME
A flow through an expanding tube at constant rate is called

Steady uniform flow
Unsteady non-uniform flow
Unsteady uniform flow
Steady non-uniform flow

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Hydraulics and Fluid Mechanics in ME
The center of pressure of a surface subjected to fluid pressure is the point

at which all hydraulic forces meet
on the surface at which gravitational force acis
similar to metacentre
on the surface at which resultant pres-sure acts

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Hydraulics and Fluid Mechanics in ME
The loss of head at entrance in a pipe is (where v = Velocity of liquid in the pipe)

0.5v²/2g
0.75v²/2g
v²/2g
0.375v²/2g

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Hydraulics and Fluid Mechanics in ME
A flow is called sub-sonic, if the Mach number is

Unity
Less than unity
Between 1 and 6
More than 6

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Hydraulics and Fluid Mechanics in ME
If the ratio's of the corresponding forces acting at corresponding points are equal, then the model and the prototype are said to have.

Dynamic similarity
Kinematic similarity
None of these
Geometric similarity

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