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Hydraulics & Fluid Mechanics

Hydraulics & Fluid Mechanics
Which of the following instrument can be used for measuring speed of an aeroplane

Venturimeter
rotameter
pitot tube
Orifice plate

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Hydraulics & Fluid Mechanics
THEE HORIZONTAL COMPONENT OF BUOYANT FORCE IS

None of these
SAME AS BUOYANT FORCE
ZERO
NEGLIGIBLE

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Hydraulics & Fluid Mechanics
Free surface of a liquid behaves like a sheet and tends to contract to smallest possible area due to the

force of friction
force of adhesion
force of cohesion
force of diffusion

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Hydraulics & Fluid Mechanics
Drag force is a function of i) projected area of the body ii) mass density of the fluid iii) velocity of the body The correct answer is

(ii) and (iii)
(i) and (iii)
(i), (ii) and (iii)
(i) and (ii)

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Hydraulics & Fluid Mechanics
For a floating body to be in equilibrium

a righting couple should be formed
All of these
center of buoyancy and e.g. must lie on same vertical plane
meta center should be above e.g.

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Hydraulics & Fluid Mechanics
THE THEORETICAL VALUE OF COEFFICIENT OF CONTRACTION OF A SHARP EDGED ORIFICE IS

0.86
1.01
0.611
0.95

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