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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
Which of the following pump is successfully used for lifting water to the turbines?

Reciprocating pump
Air lift pump
Jet pump
Centrifugal pump

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

Increases
None of these
Decreases
Remain unaffected

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Hydraulics and Fluid Mechanics in ME
The hydraulic efficiency of an impulse turbine is maximum when velocity of wheel is _______ of the jet velocity,

Three-fourth
One-half
Double
One-fourth

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Hydraulics and Fluid Mechanics in ME
The water in a jet propelled boat is drawn through the openings facing the direction of motion of the boat. The efficiency of propulsion is given by

2V/(vr - v)
2V/(vr + v)
V/(vr + v)
V/(vr - v)

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Hydraulics and Fluid Mechanics in ME
The value of bulk modulus of a fluid is required to determine

Mach number
Froude's number
Reynold's number
Euler's number

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Hydraulics and Fluid Mechanics in ME
In a forced vortex, the velocity of flow everywhere within the fluid is

minimum
zero
maximum
non-zero finite

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