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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
A flow in which the volume of a fluid and its density does not change during the flow is called _________ flow.

Viscous
Incompressible
None of these
Compressible

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

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

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Hydraulics and Fluid Mechanics in ME
The discharge through an external mouthpiece is given by (where a = Cross-sectional area of the mouthpiece, and H = Height of liquid above the mouthpiece)

1.585 a.√(2gH)
0.855 a.√(2gH)
1.855 aH.√(2g)
5.85 aH.√(2g)

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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) × H2
Cd × a × √(2g) × H3/2

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Hydraulics and Fluid Mechanics in ME
The flow in which conditions do not change with time at any point, is known as

turbulent flow
uniform flow
one dimensional flow
steady flow

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Hydraulics and Fluid Mechanics in ME
The torque required to overcome viscous resistance of a footstep bearing is (where μ = Viscosity of the oil, N = Speed of the shaft, R = Radius of the shaft, and t = Thickness of the oil film)

μπ²NR/60t
μπ²NR⁴/60t
μπ²NR³/60t
μπ²NR²/60t

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