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Hydraulics & Fluid Mechanics

Hydraulics & Fluid Mechanics
Which of the following is demensionless

specific weight
specific gravity
specific speed
specific volume

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Hydraulics & Fluid Mechanics
Two pipe systems are said to be equivalent when

head loss and discharge are same in two systems
length and diameter are same in two systems
friction factor and length are same in two systems
length of pipe and discharge are same in two systems

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Hydraulics & Fluid Mechanics
Least possible value of correction factor for i) kinetic energy is zero ii) kinetic energy is 1 iii) momentum is zero iv) momentum is 1 The correct statements are

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

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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 adhesion
force of cohesion
force of diffusion
force of friction

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Hydraulics & Fluid Mechanics
The line of action of the buoyant force acts through the

center of gravity of any submerged body
center of the volume of floating body
centroid of the volume of fluid vertically above the body
centriod of the displaced volume of fluid

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Hydraulics & Fluid Mechanics
Flow at constant rate through a tapering pipe is i) steady flow ii) uniform flow iii) unsteady flow iv) non-uniform flow The correct answer is

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

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