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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
Indicator diagram of a reciprocating pump is a graph between

Flow vs. speed
Pressure in cylinder vs. swept volume
Pressure vs. speed
Flow vs. swept volume

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

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

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Hydraulics and Fluid Mechanics in ME
The resultant upward pressure of the fluid on an immersed body due to its tendency to uplift the sub-merged body is called

reaction
metacentre
buoyancy
upthrust

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Hydraulics and Fluid Mechanics in ME
The pressure of the liquid flowing through the divergent portion of a Venturimeter

Remains constant
Decreases
Depends upon mass of liquid
Increases

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Hydraulics and Fluid Mechanics in ME
Which place in hydraulic turbine is most susceptible for cavitations?

Inlet of draft rube
Blade inlet
Guide blade
Penstock

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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/4
L/3
L/2
L

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