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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The impeller of a centrifugal pump may have

Any one of these
Vortex casing
Volute casing
Volute casing with guide blades

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Hydraulics and Fluid Mechanics in ME
The loss of head at exit of a pipe is (where v = Velocity of liquid in the pipe)

0.75v²/2g
0.5v²/2g
0.375v²/2g
v²/2g

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

decreases
remains unaffected
unpredictable
increases

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

Francis turbine
Any one of the above
Impulse turbine
Propeller turbine

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Hydraulics and Fluid Mechanics in ME
If the dynamic viscosity of a fluid is 0.5 poise and specific gravity is 0.5, then the kinematic viscosity of that fluid in stokes is

1
0.25
0.5
None of these

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Hydraulics and Fluid Mechanics in ME
The wake

None of these
is a region of high pressure intensity
always occurs after a separation point
always occurs before a separation point

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