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

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Hydraulics & Fluid Mechanics
According to Bernoulli’s equation for steady ideal fluid flow

total energy is constant throughout
velocity and pressure are inversely proportional
principle of conservation of mass holds
the energy is constant along a stream-line but may vary across streamlines

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Hydraulics & Fluid Mechanics
Metacentric height is given as the distance between

the center of gravity of the body andthe meta center
the center of gravity of the body and the center of buoyancy
the center of gravity of the body and the center of pressure
center of buoyancy and metacentre

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Hydraulics & Fluid Mechanics
True one-dimensional flow occurs when

the fluid particles move in plane or parallel planes and the streamline pat-terns are identical in each plane
the velocity of successive fluid par-ticles, at any point, is the same at suc-cessive periods of time
the magnitude and direction of the velocity do not change from point to point in the fluid
the direction and magnitude of the veiocity at all points are identical

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Hydraulics & Fluid Mechanics
Steady flow occurs when

the magnitude and direction of the velocity do not change from point to point in the fluid
the velocity of successive fluid par-ticles, at any point, is the same at suc-cessive periods of time
the fluid particles move in plane or parallel planes and the streamline pat-terns are identical in each plane
the direction and magnitude of the velocity at all points are identical

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