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Hydraulics & Fluid Mechanics

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

cohesion
surface tension
viscosity
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

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

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

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

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Hydraulics & Fluid Mechanics
Normal depth in open channel flow is the depth of flow corresponding to

uniform flow
Steady flow
unsteady flow
laminar flow

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

0.95
0.611
0.86
1.01

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Hydraulics & Fluid Mechanics
The continuity equation pi V,A,= p2V2A2 is based on the following assumption regarding flow of fluid (where pi and p2 are mass densities.)

uniform flow
incompressible flow
frictionless flow
steady flow

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