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Hydraulics & Fluid Mechanics

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

0.86
1.01
0.95
0.611

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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

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

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Hydraulics & Fluid Mechanics
The position of center of pressure on a plane surface immersed vertically in a static mass of fluid is

always below the centroid of the area
None of these
always above the centroid of the area
at the centroid of the submerged area

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Hydraulics & Fluid Mechanics
If 850 kg liquid occupies volume of one cubic meter, men 0.85 represents its

specific mass
specific weight
specific density
specific gravity

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Hydraulics & Fluid Mechanics
Surface energy per unit area of a surface is numerically equal to

force of adhesion
atmospheric pressure
surface tension
force of cohesion

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

Venturimeter
Orifice plate
rotameter
pitot tube

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