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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The specific speed of a turbine is given by the equation

N√P / H²
N√P / H5/4
N√P / H3
N√P / H3/2

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Hydraulics and Fluid Mechanics in ME
For a body floating in a liquid the normal pressure exerted by the liquid acts at

bottom surface of the body
metacentre
e.g. of the body
all points on the surface of the body

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Hydraulics and Fluid Mechanics in ME
The stability of a dam is checked for

All of these
Sliding of the wall or dam
Tension at the base
Overturning of the wall or dam

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Hydraulics and Fluid Mechanics in ME
A valve is suddenly closed in a water main in wl.ich the velocity is 1 m/sec and velocity of pressure wave is 981 m/ sec. The inertia head at the valve will be

None of these
10m
100m
1 m

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Hydraulics and Fluid Mechanics in ME
Froude's number is the ratio of inertia force to

Pressure force
Elastic force
Gravity force
Surface tension force

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

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MORE MCQ ON Hydraulics and Fluid Mechanics in ME

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