That part of the flow in a stream comes from sub-soil or valley, may be beneath the top surface of channel bed is called__________________?

Related Mcqs:

1. A water rise takes place on down stream of sloping glacis, when a stream of water moving with high velocity and low depth strikes another stream of flow moving with low velocity and high depth, such breakage in water surface is called______________?

   A. Water wave B. Water tide C. Hydraulic jump D. Afflux...

2. When a weir is constructed, the downstream .bed of the river goes on eroding and consequently causes progressive lowering of the bed on downstream of weir called__________________?

   A. Retrogression B. Lowering down of bed C. Ponding on down stream D. All are correct...

3. The line in a flow net which shows the direction of flow of water through a soil mass beneath dam are called _________________?

   A. Equipotential lines B. flow lines C. Section lines D. Streak lines...

4. The field capacity is the amount of water retained by a saturated soil mass after being acted by gravity. The amount of water required to bring the soil moisture content of that soil up to field capacity is called__________________?

   A. Soil-moisture deficiency B. Field-moisture deficiency C. Equivalent-moisture deficiency D. a and b are correct...

5. The law that states that the discharge of sub-soil water is directly proportional to the loss of head and the area of soil sample and inversely proportional to to the length of soil sample ___________________?

   A. Archimed’s principle B. Darcy’s law C. Permeability law D. Thiem’s law...

6. When seepage water after passing the ground water aquifer joins the surface stream, such stream will be called_____________________?

   A. Influent stream B. Effluent stream C. Rain stream D. Storm stream...

7. The contour of equal water heads and pressure in the soil mass beneath retaining structure are called___________________?

   A. Stream lines B. Equipotential lines C. Equilibrium lines D. Streak lines...

8. At the end of hydraulic structure, the upward force of sub-soil water just becomes equal to the submerged weight of soil grains Then exit gradient will be called______________?

   A. Submerged exit gradient B. Critical exit gradient C. Balanced exit gradient D. All are correct...

9. If a river or stream is collecting sediment and is building up dunes in its bed is called ______________________?

   A. Stable river B. Sub-stable river C. Aggrading river D. Sediment river...

10. A channel is said lo be of most economical cross section, for a given cross-sectional area and bed slope when it __________________?

    A. Gives max. Discharge B. Has minimum wetted perimeter C. Involves lesser excavation D. All of these...