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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The factional resistance of a pipe varies approximately with __________ of the liquid.

Square of velocity
Cube of velocity
Velocity
Pressure

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Hydraulics and Fluid Mechanics in ME
The value of friction factor ‘f’ for smooth pipes for Reynolds number 106 is approximately equal to

0.0001
0.1
0.001
0.01

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Hydraulics and Fluid Mechanics in ME
A hydraulic coupling belongs to the category of

Power absorbing machines
Energy transfer machines
Power developing machines
Energy generating machines

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Hydraulics and Fluid Mechanics in ME
Poise is the unit of

shear stress in fluids
viscosity
surface tension
capillarity

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Hydraulics and Fluid Mechanics in ME
Hydrometer is used to determine

specific gravity of liquids
specific gravity of solids
specific gravity of gases
relative humidity

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Hydraulics and Fluid Mechanics in ME
The specific speed of a centrifugal pump, delivering 750 liters of water per second against a head of 15 meters at 725 r.p.m., is

48.2 r.p.m
82.4 r.p.m.
248 r.p.m
24.8 r.p.m.

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