. Which one of the following is not correct statement?1 pointConstant-head test is suitable for more permeable granular materials.Flow of water through soils is called seepage.Bernoulli’s proposed that average flow velocity through soils is proportional to the gradient of the total head.The purpose of drawing flow net is to estimate the amount of water seeping.

Which of the following is the best description of system head curve?Group of answer choicesThe measurement of fluid viscosity at different points in a systemA curve showing the total mass of fluid flowing through a system per unit timeA combination of the pressure, velocity, gravitational and friction contributions for a given flow systemThe cumulative frictional resistance encountered by a fluid as it moves through a systemA function of the maximum pressure that a fluid system can withstand before failure

List the three principles used in the analysis of fluid flow.

The figure below shows a flow net for the flow under a concrete dam.  The soil surface is at the same elevation on both sides of the dam. If the retained height of water behind the dam, L, is 12.5 m, the flow rate is 0.06 m3/day/m and the soil is isotropic and homogeneous, Flag question: Question 1Question 11 ptsWhat is the permeability of the soil (in m/day)?

Water is flowing at the rate of 144 m³/hr through a 1 km long and 120 mm diameter pipe. If the head loss is 7 m of water, find the wall roughness of pipe in millimeters. If the roughness is doubled, estimate the percentage increase in head loss. (Viscosity of water is 1.02 × 10-3 Ns/m²)

The Bernoulli approximation is typically useful in flow regions ______.Group of answer choicesoutside the boundary layersof viscous flowin the boundary layersdirectly downstream of bodies