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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
head of water (h)
V/T
h2

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Hydraulics and Fluid Mechanics in ME
The unit speed of the turbine runner is

N/√H
N/H3/2
N/H
N/H²

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Hydraulics and Fluid Mechanics in ME
Low specific speed of a pump implies it is

Centrifugal pump
Axial flow pump
None of these
Mixed flow pump

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Hydraulics and Fluid Mechanics in ME
For hypersonic flow, the Mach number is

greater than unity
greater than 2
greater than 4
unity

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Hydraulics and Fluid Mechanics in ME
By fitting an air vessel to the reciprocating pump, there is always a saving of work done and subsequently saving of power. The saving in case of a double acting reciprocating pump is

0.488
0.392
0.848
0.884

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Hydraulics and Fluid Mechanics in ME
Which of the following pump is preferred for flood control and irrigation applications?

Mixed flow pump
Axial flow pump
Reciprocating pump
Centrifugal pump

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