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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
In a centrifugal pump, the regulating valve is provided on the

Delivery pipe
Casing
Suction pipe
Impeller

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Hydraulics and Fluid Mechanics in ME
The discharge over a rectangular notch is (where b = Width of notch, and H = Height of liquid, above the sill of the notch)

(2/3) Cd × b × √(2gH)
(2/3) Cd × b × √(2g) × H2
(2/3) Cd × b × √(2g) × H
(2/3) Cd × b × √(2g) × H3/2

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Hydraulics and Fluid Mechanics in ME
Guide angle as per the aerofoil theory of Kaplan turbine blade design is defined as the angle between

Lift and drag
Lift and tangential force
Drag and resultant force
Lift and resultant force

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Hydraulics and Fluid Mechanics in ME
The speed of an imaginary turbine, identical with the given turbine, which will develop a unit power under a unit head, is known as

Specific speed
Unit speed
None of these
Normal speed

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Hydraulics and Fluid Mechanics in ME
The specific weight of water is 1000 kg/m3

At normal pressure of 760 mm
At 4°C temperature
All of the listed here
At mean sea level

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Hydraulics and Fluid Mechanics in ME
For centrifugal pump impeller, the maximum value of the vane exit angle is

25° to 30°
15° to 20°
20° to 25°
10° to 15°

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