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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
According to fan laws, for fans having constant wheel diameter, the air or gas capacity varies

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

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Hydraulics and Fluid Mechanics in ME
The discharge through a siphon spillway is

Cd × a × √(2g) × H2
Cd × a × √(2g) × H3/2
Cd × a × √(2g) × H5/2
Cd × a × √(2gH)

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Hydraulics and Fluid Mechanics in ME
The total pressure force on a plane area is equal to the area multiplied by the intensity of pressure at the Centroid, if

The area is horizontal
The area is inclined
The area is vertical
All of these

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Hydraulics and Fluid Mechanics in ME
The discharge through a reaction turbine ___ with the increase in unit speed.

Increases
Remain same
None of the listed here
Decreases

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

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

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Hydraulics and Fluid Mechanics in ME
Power required to drive a centrifugal pump is directly proportional to _________ of its impeller.

Fourth power of diameter
Square of diameter
Cube of diameter
Diameter

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