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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
Which of the following turbine is preferred for 0 to 25 m head of water?

Pelton wheel
Francis turbine
Kaplan turbine
None of these

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Hydraulics and Fluid Mechanics in ME
Motion of a liquid in a volute casing of a centrifugal pump is an example of

Rotational flow
Spiral vortex flow
Forced spiral vortex flow
Radial

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

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

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

Francis turbine
Propeller turbine
Impulse turbine
Any one of the above

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Hydraulics and Fluid Mechanics in ME
The correct relationship among displacement thickness d, momentum thickness m and energy thickness e is

e > d > m
e > m > d
d > m > e
d > e > m

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Hydraulics and Fluid Mechanics in ME
In a lock-gate, the reaction between two gates is (where P = Resultant pressure on the lock gate, and α = Inclination of the gate with the normal to the side of the lock)

2p/sin (α/2)
p/2sinα
p/sinα
2p/sinα

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