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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The value of coefficient of velocity for a sharp edged orifice __________ with the head of water.

None of these
Decreases
Increases
Remain same

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Hydraulics and Fluid Mechanics in ME
High specific speed of turbine implies it is

Impulse turbine
Francis turbine
None of the listed here
Propeller turbine

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Hydraulics and Fluid Mechanics in ME
The upper surface of a weir over which water flows is known is

nappe
sill
weir top
crest

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Hydraulics and Fluid Mechanics in ME
Flow occurring in a pipeline when a valve is being opened is

laminar
steady
unsteady
vortex

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Hydraulics and Fluid Mechanics in ME
The resultant upward pressure of a fluid on a floating body is equal to the weight of the fluid displaced by the body. This definition is according to

Archimedes’ principle
Equilibrium of a floating body
Bernoulli’s theorem
Buoyancy

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Hydraulics and Fluid Mechanics in ME
Which of the following statement is correct as regard to water wheels?

They give constant efficiency, even if the discharge is not constant
They have slow speeds
They are suitable even for low water heads
All of these

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