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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The speed of a pressure wave through a pipe depends upon

the viscosity of fluid
the length of pipe
the bulk modulus for the fluid
the original head

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Hydraulics and Fluid Mechanics in ME
According to fan laws, for fans having constant wheel diameter, the pressure varies

Square of fan speed
Cube of fan speed
Square root of fan speed
Directly as fan speed

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Hydraulics and Fluid Mechanics in ME
The flow rate in gear pump

Decreases with increase in pressure
Unpredictable
More or less remains constant with increase in pressure
Increases with increase in pressure

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Hydraulics and Fluid Mechanics in ME
The process of diffusion of one liquid into the other through a semi-permeable membrane is called

viscosity
surface tension
osmosis
cohesion

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Hydraulics and Fluid Mechanics in ME
Which type of the pump is different from others in the same group?

Screw pump
Gear pump
Cam and piston pump
Plunger pump

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Hydraulics and Fluid Mechanics in ME
The magnitude of water hammer depends upon the

Elastic properties of the pipe material
All of these
Speed at which the valve is closed
Elastic properties of the liquid flowing through the pipe

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