Test: Two Dimensional Flow : Laplace Equation - Civil Engineering (CE) MCQ

When water flows through a saturated soil mass ,the total head at any point in the soil mass consist of i)piezometric head or pressure head ii) the velocity y head iii)the position head.

The quantity of water flowing through a saturated soil mass, as well as the distribution of water pressure can be estimated by the theory of fluids through porous medium.

The size of the pore spaces in saturated soil mass does not change with time, regardless of water pressure. Therefore the saturated porous medium is incompressible.

According to the theoretical analysis of flow of fluids, the quantity of water flowing into any element of volume is equal to the quantity which flows out in the same length of time.

There is no change in the degree of saturation in the zone of soil through which water seeps.

The direction of seepage is always perpendicular to the equipotential line. But both equipotential line and stream line (flow line) is mutually orthogonal .So the individual particle of the water seep through stream line.

solution for velocity potential equation can be obtained from analytical, graphical and experimental methods which give two set of curves.

The loss of head or the dissipation of the hydraulic head per unit distance of flow through the soil is called hydraulic gradient
i.e. i=h/L.

The seepage structure is vital importance in the stability analysis of earth structures subjected to the action of seepage.

Flow occurs between two points only when there is a difference in the potential energies or simply potential.