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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The velocity of jet of water travelling out of opening in a tank filled with water is proportional to

h2
V/T
head of water (h)
h2

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

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Hydraulics and Fluid Mechanics in ME
Delivery head of a centrifugal pump is

Inversely proportional to N²
Inversely proportional to N
Directly proportional to N
Directly proportional to N²

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Hydraulics and Fluid Mechanics in ME
The dynamic viscosity of gases __________ with rise in temperature.

Remain unaffected
Increases
Decreases
None of these

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Hydraulics and Fluid Mechanics in ME
When the Mach number is less than unity, the flow is called

Sonic flow
Super-sonic flow
Hyper-sonic flow
Sub-sonic flow

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Hydraulics and Fluid Mechanics in ME
The specific speed of a turbine is the speed of an imaginary turbine, identical with the given turbine, which

Delivers unit discharge under unit speed
Develops unit power under unit speed
Develops unit power under unit head
Delivers unit discharge under unit head

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