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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
For starting an axial flow pump, its delivery valve should be

Could be either open or closed
Depends on starting condition and flow desired
Closed
Open

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Hydraulics and Fluid Mechanics in ME
Any change in load is adjusted by adjusting following parameter on turbine

Blade velocity
Net head
Absolute velocity
Flow

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Hydraulics and Fluid Mechanics in ME
Which of the following is dimensionless?

Specific gravity
Specific weight
Specific volume
Specific speed

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Hydraulics and Fluid Mechanics in ME
One poise is equal to

100 N-s/m2
0.1 N-s/m2
1 N-s/m2
10 N-s/m2

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Hydraulics and Fluid Mechanics in ME
The siphon will work satisfactorily, if the minimum pressure in the pipe is __________ vapour pressure of liquid.

Less than
None of these
More than
Equal to

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Hydraulics and Fluid Mechanics in ME
Rain drops are spherical because of

surface tension forces
air resistance
viscosity
atmospheric pressure

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