Water Resources Engineering - Section 1 (2)

Pick up the  correct statement from the  following :

If the viscosity of ground water is 1.00, the Slitcher's constant is 400, the effective size of soil particles in acquifer is 0.5 mm and hydraulic gradient is 1 in 80, the velocity of flow is

With the usual meanings ofletters, the equation  is used for determining the velocity of ground water flow in metres per day. It is known as

Pick up the incorrect statement from the following :

The quantity of water retained by the sub-soil against gravity, is known

If the potential infiltration of a water shed having a soil with fair pasture cover, is 10 cm and rainfall is 12 cm, the direct run off is :

If s is the potential infiltration, P is rainfall in cm in a drainage of a soil with fair pasture cover, the direct run off Q in cm is given by

If the area of storm hydrograph is equal to 10² cm, the ordinates of a unit hydrograph may be obtained by dividing the ordinates of the storm hydrograph by