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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The imaginary line drawn in the fluid in such a way that the tangent to any point gives the direction of motion at that point, is known as

Steak line
Potential line
Path line
Stream line

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Hydraulics and Fluid Mechanics in ME
The specific speed (Ns) of a centrifugal pump is given by

(N√Q)/H3/4
(N√Q)/H5/4
(N√Q)/H2/3
(N√Q)/H

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Hydraulics and Fluid Mechanics in ME
A tank of uniform cross-sectional area (A) containing liquid upto height (H1) has an orifice of cross-sectional area (a) at its bottom. The time required to empty the tank completely will be

(2A√H₁)/(Cd × a√2g)
(2AH₁²)/(Cd × a√2g)
(2AH₁3/2)/(Cd × a√2g)
(2AH₁)/(Cd × a√2g)

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Hydraulics and Fluid Mechanics in ME
The velocity of jet of water traveling out of opening in a tank filled with water is proportional to

V/T
h/2
h²
Head of water (h)

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Hydraulics and Fluid Mechanics in ME
A weir, generally, used as a spillway of a dam is

Broad crested weir
Ogee weir
Submerged weir
Narrow crested weir

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Hydraulics and Fluid Mechanics in ME
An open tank contains 1 m deep water with 50 cm depth of oil of specific gravity 0.8 above it. The intensity of pressure at the bottom of tank will be

10 kN/m2
14 kN/m2
4 kN/m2
12 kN/m2

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