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Hydraulics & Fluid Mechanics

Hydraulics & Fluid Mechanics
In a Sutro weir, the discharge is proportional to (where H is head)

H
H5/2
H3/2
H1/2

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Hydraulics & Fluid Mechanics
In a two dimensional incompressible steady flow around an airfoil, the stream lines are 2 cm apart at a great distance from the airfoil, where the velocity is 30 m/sec. The velocity near the airfoil, where the stream lines are 1.5 cm apart, is

33 M/SEC
50 M/SEC
22.5 M/SEC
40 M/SEC

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Hydraulics & Fluid Mechanics
Free surface of a liquid tends to contract to the smallest possible area due to force of

surface tension
viscosity
cohesion
friction

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Hydraulics & Fluid Mechanics
The increase in meta centric height i) increases stability ii) decreases stability iii) increases comfort for passengers iv) decreases comfort for passengers The correct answer is

(i) and (iv)
(ii) and (iv)
(i) and (iii)
(ii) and (iii)

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Hydraulics & Fluid Mechanics
A vertical rectangular plane surface is submerged in water such that its top and bottom surfaces are 1.5 m and 6.0 m res-pectively below the free surface. The position of center of pressure below the free surface will be at a distance of

4.0 M
4.2 M
4.6 M
4.8 M

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Hydraulics & Fluid Mechanics
Separation of flow occurs when

the cross-section of a channel is reduced
All of these
the boundary layer comes to rest
the pressure intensity reaches a minimum

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