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Hydraulics and Fluid Mechanics in ME

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

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

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Hydraulics and Fluid Mechanics in ME
Maximum impulse will be developed in hydraulic ram when

Ram chamber is large
Supply pipe is short
Waste valve closes suddenly
Supply pipe is long

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Hydraulics and Fluid Mechanics in ME
The resultant upward pressure of the fluid on an immersed body is called

all the above are correct
upthrust
center of pressure
buoyancy

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Hydraulics and Fluid Mechanics in ME
Geometric similarity is said to exist between the model and the prototype, if both of them

Have identical forces
Are identical in shape, but differ only in size
Are equal in size and shape
Have identical velocities

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Hydraulics and Fluid Mechanics in ME
When time of closure tc = L/v0 (where L is length of pipe and v0 is speed of pressure wave), the portion of pipe length subjected to maximum head is

L/3
L/2
L/4
L

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Hydraulics and Fluid Mechanics in ME
Surge wave in a rectangular channel is an example ofi) steady flowii) unsteady flowiii) uniform flowiv) non-uniform flowThe correct answer is

(i) and (iv)
(ii) and (iv)
(ii) and (iii)
(i) and (iii)

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