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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The velocity through a channel of circular section will be maximum when the depth of water is __________ the diameter of the circular channel.

0.81 times
0.95 times
0.34 times
0.67 times

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Hydraulics and Fluid Mechanics in ME
Multistage centrifugal pumps are used to obtain

High head and high discharge
High head
Pumping of viscous fluids
High discharge

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Hydraulics and Fluid Mechanics in ME
A flow through a long pipe at constant rate is called

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

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Hydraulics and Fluid Mechanics in ME
Dynamic viscosity of most of the liquids with rise in temperature

Unpredictable
Remain unaffected
Increases
Decreases

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Hydraulics and Fluid Mechanics in ME
The velocity at which the flow changes from laminar flow to turbulent flow is called

Super-sonic velocity
Sub-sonic velocity
Critical velocity
Velocity of approach

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Hydraulics and Fluid Mechanics in ME
Principle of similitude forms the basis of

hydraulic designs
comparing similarity between design and actual equipment
comparing two identical equipments
designing models so that the result can be converted to prototypes

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