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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The variation in the volume of a liquid with the variation of pressure is called its

Capillarity
Surface tension
Compressibility
Viscosity

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Hydraulics and Fluid Mechanics in ME
For hypersonic flow, the Mach number is

greater than 4
unity
greater than unity
greater than 2

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Hydraulics and Fluid Mechanics in ME
The losses are more in

turbulent flow
transition flow
laminar flow
critical flow

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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

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

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Hydraulics and Fluid Mechanics in ME
The torque required to overcome viscous resistance of a collar bearing is (where R1 and R2 = External and internal radius of collar)

μπ²N/60t) × (R₁³ - R₂³)
(μπ²N/60t) × (R₁ - R₂)
(μπ²N/60t) × (R₁⁴ - R₂⁴)
(μπ²N/60t) × (R₁² - R₂²)

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

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MORE MCQ ON Hydraulics and Fluid Mechanics in ME

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