A. Stream lines
B. Equipotential lines
C. Equilibrium lines
D. Streak lines
Related Mcqs:
- 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 - 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 - According to Blight, the percolating water seeps along the lower contour of the hydraulic structure, the length traversed by this water is called ______________________?
A. Creep length
B. Seeping length
C. Piping
D. Undermining - 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 - The field capacity is the water retained by a saturated soil after free drainage of surplus water to the ground water table but the water retained by a saturated soil after being centrifuged by a centrifugal force of 1000 times that of gravity is called________________?
A. Soil moisture
B. Equivalent moisture
C. Field moisture
D. Available moisture - A line shown on a contour map, set out on ground between certain constant points of slope is called___________________?
A. Gradient
B. Contour gradient
C. Contour line
D. Counter interval - The property of saturated soil mass which transmits appreciable quantities . water is called___________________?
A. Porosity
B. Transmissibility
C. Permeability
D. Discharge - 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 - 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__________________?
A. Sub-surface flow
B. Base flow
C. Ground flow
D. All are correct - When the high flood level of the drain is sufficiently below the bed of the Canal that the drainage water flows freely under gravity, such structure is called___________________?
A. Aqueduct
B. Syphon-aqueduct
C. Cross-Drainage
D. Non-gravity structure
