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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
Which of the following instrument can be used for measuring speed of a submarine moving in deep sea

rotameter
Venturimeter
hot wire anemometer
pitot tube

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Hydraulics and Fluid Mechanics in ME
The discharge over a rectangular notch is (where b = Width of notch, and H = Height of liquid, above the sill of the notch)

(2/3) Cd × b × √(2g) × H2
(2/3) Cd × b × √(2g) × H
(2/3) Cd × b × √(2gH)
(2/3) Cd × b × √(2g) × H3/2

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Hydraulics and Fluid Mechanics in ME
The resultant upward pressure of the fluid on an immersed body due to its tendency to uplift the submerged body is called

Up-thrust
Reaction
Buoyancy
Metacentre

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Hydraulics and Fluid Mechanics in ME
A one dimensional flow is one which

is steady uniform flow
is uniform flow
involves zero transverse component of flow
takes place in straight lines

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Hydraulics and Fluid Mechanics in ME
The theoretical velocity of jet at vena contracta is (where H = Head of water at vena contracta)

2g × √H
√(2gh)
2gH
H × √(2g)

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Hydraulics and Fluid Mechanics in ME
The capillary rise at 20°C in a clean glass tube of 1 mm bore containing water is approximately

5 mm
20 mm
30 mm
10 mm

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