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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The coefficient of discharge for an external mouthpiece depends upon

Length of mouthpiece
Area of mouthpiece
Velocity of liquid
Pressure of liquid

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Hydraulics and Fluid Mechanics in ME
According to Manning's formula, the discharge through an open channel is (where M = Manning's constant)

A × M × m1/2 × i2/3
A1/2 × M2/3 × m × i
A × M × m2/3 × i1/2
A2/3 × M1/3 × m × i

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Hydraulics and Fluid Mechanics in ME
Coefficient of discharge Cd is equal to (where Cc = Coefficient of contraction, Cv = Coefficient of velocity, and Cr = Coefficient of resistance)

Cc/Cr
Cc × Cr
Cc × Cv
Cv × Cr

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Hydraulics and Fluid Mechanics in ME
A vessel of 4 m3 contains oil which weighs 30 kN. The specific weight of the oil is

10 kN/m3
4.5 kN/m3
7.5 kN/m3
6 kN/m3

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

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

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Hydraulics and Fluid Mechanics in ME
A square surface 3 m × 3 m lies in a vertical line in water pipe its upper edge at water surface. The hydrostatic force on square surface is

18,000 kg
13,500 kg
27,000 kg
9,000 kg

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