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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
A submerged body is said to be in a stable equilibrium, if its centre of gravity __________ the centre of buoyancy.

Coincides with
None of these
Lies below
Lies above

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Hydraulics and Fluid Mechanics in ME
The jet ratio is defined as the ratio of the

Velocity of jet to the velocity of Pelton wheel
Diameter of jet to the diameter of Pelton wheel
Velocity of Pelton wheel to the velocity of jet
Diameter of Pelton wheel to the diameter of jet

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Hydraulics and Fluid Mechanics in ME
Two pipes of same length and diameters d and 2d respectively are connected in series. The diameter of an equivalent pipe of same length is

greater than 2d
less than d
between d and 1.5 d
between 1.5 d and 2d

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Hydraulics and Fluid Mechanics in ME
The depth of center of pressure of an immersed surface, inclined at an angle 'θ' with the liquid surface lies at a distance equal to __________ the center of gravity.

IG sinθ/Ax̅ below
IG sin²θ/Ax̅ above
IG sinθ/Ax̅ above
IG sin²θ/Ax̅ below

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Hydraulics and Fluid Mechanics in ME
A vertically immersed surface is shown in the below figure. The distance of its centre of pressure from the water surface is

b²/12 + x̅
(d²/12 x̅) + x̅
d²/12 + x̅
(bd²/12) + x̅

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Hydraulics and Fluid Mechanics in ME
Low specific speed of turbine implies it is

Impulse turbine
Any one of the above
Francis turbine
Propeller turbine

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